• A twin study of cigarette and snus initiation and quantity of use in Norwegian Adult Twins 

      Kendler, Kenneth S.; Aggen, Steven H.; Gillespie, Nathan; Czajkowski, Nikolai Olavi; Ystrøm, Eivind; Reichborn-Kjennerud, Ted (Peer reviewed; Journal article, 2019)
    • Analysis of shared heritability in common disorders of the brain 

      Anttila, Verneri; Bulik-Sullivan, Brendan; Finucane, Hilary K.; Walters, Raymond K.; Bras, Jose; Duncan, Laramie; Escott-Price, Valentina; Falcone, Guido; Gormley, Padhraig; Malik, Rainer; Patsopoulos, Nikolaos A.; Ripke, Stephan; Wei, Zhi; Yu, Dongmei; Lee, Phil H.; Turley, Patrick; Grenier-Boley, Benjamin; Chouraki, Vincent; Kamatani, Yoichiro; Berr, Claudine; Letenneur, Luc; Hannequin, Didler; Amouyel, Philippe; Boland, Anne; Deleuze, Jean-François; Duron, Emmanuelle; Vardarajan, Badri N.; Reitz, Christiane; Goate, Alison M.; Huentelman, Matthew; Kamboh, M. Ilyas; Larson, Eric B.; Rogaeva, Ekaterina; St George-Hyslop, Peter; Hakonarson, Hakon; Kukull, Walter A.; Farrer, Lindsay A.; Barnes, Lisa L.; Beach, Thomas G.; Demirci, F. Yesam; Head, Elizabeth; Hulette, Christine M.; Jicha, Gregory A.; Kauwe, John S.K.; Kaye, Jeffery A.; Leverenz, James B.; Levey, AIlan I.; Lieberman, Andrew P.; Pankratz, Vernon S.; Poon, Wayne W.; Quinn, Joseph F.; Saykin, Andrew J.; Schneider, Lon S.; Smith, Amanda G.; Sonnen, Joshua A.; Stern, Robert A.; Van Deerlin, Vivianna M.; Van Eldik, Linda J.; Harold, Denise; Russo, Giancarlo; Rubinsztein, David C.; Bayer, Anthony; Tsolaki, Magda; Proitsi, Petra; Fox, Nick C.; Hampel, Harald; Owen, Michael J.; Mead, Simon; Passmore, Peter; Morgan, Kevin; Nöthen, Markus M.; Rossor, Martin; Lupton, Michelle K.; Hoffmann, Per; Kornhuber, Johannes; Lawlor, Brian; McQuillin, Andrew; Al-Chalabi, Ammar; Bis, Joshua C; Ruiz, Agustin; Boada, Mercè; Seshadri, Sudha; Beiser, Alexa; Rice, Kenneth; van der Lee, Sven J.; De Jager, Philip L.; Geschwind, Daniel H.; Riemenschneider, Matthias; Riedel-Heller, Steffi; Rotter, Jerome I.; Ransmayr, Gerhard; Hyman, Bradley T.; Cruchaga, Carlos; Alegret, Montserrat; Winsvold, Bendik K S; Palta, Priit; Farh, Kai-How; Cuenca-Leon, Ester; Furlotte, Nicholas; Kurth, Tobias; Ligthart, Lannie; Terwindt, Gisela M.; Freilinger, Tobias; Ran, Caroline; Gordon, Scott D.; Borck, Guntram; Adams, Hieab H.H.; Lehtimäki, Terho; Wedenoja, Juho; Buring, Julie E.; Schürks, Markus; Hrafnsdóttir, Maria; Hottenga, Jouke-Jan; Penninx, Brenda; Artto, Ville; Kaunisto, Mari; Vepsäläinen, Salli; Martin, Nicholas G.; Montgomery, Grant W.; Kurki, Mitja I.; Hämäläinen, Eija; Huang, Hailiang; Huang, Jie; Sandor, Cynthia; Webber, Caleb; Muller-Myhsok, Bertram; Schreiber, Stefan; Salomaa, Veikko; Loehrer, Elizabeth; Göbel, Hartmut; Macaya, Alfons; Pozo-Rosich, Patricia; Hansen, Thomas; Werge, Thomas; Kaprio, Jaakko; Metspalu, Andres; Kubisch, Christian; Ferrari, Michel D.; Belin, Andrea C.; van den Maagdenberg, Arn M.J.M.; Zwart, John-Anker; Boomsma, Dorret; Eriksson, Nicholas; Olesen, Jes; Chasman, Daniel I.; Nyholt, Dale R.; Avbersek, Andreja; Baum, Larry; Berkovic, Samuel; Bradfield, Jonathan; Buono, Russell; Catarino, Claudia B.; Cossette, Patrick; De Jonghe, Peter; Depondt, Chantal; Dlugos, Dennis; Ferraro, Thomas N.; French, Jacqueline; Hjalgrim, Helle; Jamnadas-Khoda, Jennifer; Kälviäinen, Reetta; Kunz, Wolfram S.; Lerche, Holger; Leu, Costin; Lindhout, Dick; Lo, Warren; Lowenstein, Daniel; McCormack, Mark; Møller, Rikke S.; Molloy, Anne; Ng, Ping-Wing; Oliver, Karen; Privitera, Michael; Radtke, Rodney; Ruppert, Ann-Kathrin; Sander, Thomas; Schachter, Steven; Schankin, Christoph; Scheffer, Ingrid; Schoch, Susanne; Sisodiya, Sanjay M.; Smith, Philip; Sperling, Michael; Striano, Pasquale; Surges, Rainer; Thomas, G. Neil; Visscher, Frank; Whelan, Christopher D.; Zara, Federico; Heinzen, Erin L.; Marson, Anthony; Becker, Felicitas; Stroink, Hans; Zimprich, Fritz; Gasser, Thomas; Gibbs, Raphael; Heutink, Peter; Martinez, Maria; Morris, Huw R.; Sharma, Manu; Ryten, Mina; Mok, Kin Y.; Pulit, Sara; Bevan, Steve; Holliday, Elizabeth; Attia, John; Battey, Thomas; Boncoraglio, Giorgio; Thijs, Vincent; Chen, Wei-Min; Mitchell, Braxton; Rothwell, Peter; Sharma, Pankaj; Sudlow, Cathie; Vicente, Astrid; Markus, Hugh; Kourkoulis, Christina; Pera, Joana; Raffeld, Miriam; Silliman, Scott; Perica, Vesna Boraska; Thornton, Laura M.; Huckins, Laura M.; Rayner, N. William; Lewis, Cathryn M.; Gratacos, Monica; Rybakowski, Filip; Keski-Rahkonen, Anna; Raevuori, Anu; Hudson, James I.; Reichborn-Kjennerud, Ted; Monteleone, Palmiero; Karwautz, Andreas; Mannik, Katrin; Baker, Jessica H.; O'Toole, Julie K.; Trace, Sara E.; Davis, Oliver S.P.; Helder, Sietske G.; Ehrlich, Stefan; Herpertz-Dahlmann, Beate; Danner, Unna N.; van Elburg, Annemarie A.; Clementi, Maurizio; Forzan, Monica; Docampo, Elisa; Lissowska, Jolanta; Hauser, Joanna; Tortorella, Alfonso; Maj, Mario; Gonidakis, Fragiskos; Tziouvas, Konstantinos; Papezova, Hana; Yilmaz, Zeynep; Wagner, Gudrun; Cohen-Woods, Sarah; Herms, Stefan; Julia, Antonio; Rabionet, Raquel; Dick, Danielle M.; Ripatti, Samuli; Andreassen, Ole Andreas; Espeseth, Thomas; Lundervold, Astri; Steen, Vidar Martin; Pinto, Dalila; Scherer, Stephen W.; Aschauer, Harald; Schosser, Alexandra; Alfredsson, Lars; Padyukov, Leonid; Halmi, Katherine A.; Mitchell, James; Strober, Michael; Bergen, Andrew W.; Kaye, Walter; Szatkiewicz, Jin Peng; Cormand, Bru; Ramos-Quiroga, Josep Antoni; Sánchez-Mora, Cristina; Ribasés, Marta; Casas, Miguel; Hervas, Amaia; Arranz, Maria Jesús; Haavik, Jan; Zayats, Tetyana; Johansson, Stefan; Williams, Nigel; Dempfle, Astrid; Rothenberger, Aribert; Kuntsi, Jonna; Oades, Robert D.; Banaschewski, Tobias; Franke, Barbara; Buitelaar, Jan K.; Vasquez, Alejandro Arias; Doyle, Alysa E.; Reif, Andreas; Lesch, Klaus-Peter; Freitag, Christine; Rivero, Olga; Palmason, Haukur; Romanos, Marcel; Langley, Kate; Rietschel, Marcella; Witt, Stephanie H.; Dalsgaard, Søren; Børglum, Anders D.; Waldman, Irwin; Wilmot, Beth; Molly, Nikolas; Bau, Claiton Henrique Dotto; Crosbie, Jennifer; Schachar, Russell; Loo, Sandra K.; McGough, James J.; Grevet, Eugenio H.; Medland, Sarah E.; Robinson, Elise; Weiss, Lauren A.; Bacchelli, Elena; Bailey, Anthony; Bal, Vanessa; Battaglia, Agatino; Betancur, Catalina; Bolton, Patrick; Cantor, Rita; Celestino-Soper, Patrícia; Dawson, Geraldine; De Rubeis, Silvia; Duque, Frederico; Green, Andrew; Klauck, Sabine M.; Leboyer, Marion; Levitt, Pat; Maestrini, Elena; Mane, Shrikant; Moreno-De-Luca, Daniel; Parr, Jeremy; Regan, Regina; Reichenberg, Abraham; Sandin, Sven; Vorstman, Jacob; Wassink, Thomas; Wijsman, Ellen; Cook, Edwin; Santangelo, Susan; Delorme, Richard; Rogé, Bernadette; Magalhaes, Tiago; Arking, Dan; Schulze, Thomas G.; Thompson, Robert C.; Strohmaier, Jana; Matthews, Keith; Melle, Ingrid; Morris, Derek; Blackwood, Douglas; McIntosh, Andrew; Bergen, Sarah E.; Schalling, Martin; Jamain, Stéphane; Maaser, Anna; Fischer, Sascha B.; Reinbold, Céline S.; Fullerton, Janice M.; Guzman-Parra, José; Mayoral, Fermin; Schofield, Peter R.; Cichon, Sven; Mühleisen, Thomas W.; Degenhardt, Franziska; Schumacher, Johannes; Bauer, Michael; Mitchell, Philip B.; Gershon, Elliot S.; Rice, John; Potash, James B.; Zandi, Peter P.; Craddock, Nick; Ferrier, I. Nicol; Alda, Martin; Rouleau, Guy A.; Turecki, Gustavo; Ophoff, Roel; Pato, Carlos; Anjorin, Adebayo; Stahl, Eli; Leber, Markus; Czerski, Piotr M.; Cruceanu, Cristiana; Jones, Ian R.; Posthuma, Danielle; Andlauer, Till F.M.; Forstner, Andreas J.; Streit, Fabian; Baune, Bernhard T.; Air, Tracy; Sinnamon, Grant; Wray, Naomi R.; MacIntyre, Donald J.; Porteous, David; Homuth, Georg; Rivera, Margarita; Grove, Jakob; Middeldorp, Christel M.; Hickie, Ian; Pergadia, Michele; Mehta, Divya; Smit, Johannes H.; Jansen, Rick; De Geus, Eco; Dunn, Erin; Li, Qingqin S.; Nauck, Matthias; Schoevers, Robert A.; Beekman, Aartjan T.F.; Knowles, James A.; Viktorin, Alexander; Arnold, Paul; Barr, Cathy L.; Bedoya-Berrio, Gabriel; Bienvenu, O. Joseph; Brentani, Helena; Burton, Christie; Camarena, Beatriz; Cappi, Carolina; Cath, Danielle; Cavallini, Maria; Cusi, Daniele; Darrow, Sabrina; Denys, Damiaan; Derks, Eske M.; Dietrich, Andrea; Fernandez, Thomas; Figee, Martijn; Freimer, Nelson; Gerber, Gloria; Grados, Marco; Greenberg, Erica; Hanna, Gregory L.; Hartmann, Andreas; Hirschtritt, Matthew E.; Hoekstra, Pieter J.; Huang, Alden; Huyser, Chaim; Illmann, Cornelia; Jenike, Michael; Kuperman, Samuel; Leventhal, Bennett; Lochner, Christine; Lyon, Gholson J.; Macciardi, Fabio; Madruga-Garrido, Marcos; Malaty, Irene A.; Maras, Athanasios; McGrath, Lauren; Miguel, Eurípedes C.; Mir, Pablo; Nestadt, Gerald; Nicolini, Humberto; Okun, Michael S.; Pakstis, Andrew; Paschou, Peristera; Piacentini, John; Pittenger, Christopher; Plessen, Kerstin; Ramensky, Vasily; Ramos, Eliana M.; Reus, Victor; Richter, Margaret A.; Riddle, Mark A.; Robertson, Mary M.; Roessner, Veit; Rosário, Maria; Samuels, Jack F.; Sandor, Paul; Stein, Dan J.; Tsetsos, Fotis; Van Nieuwerburgh, Filip; Weatherall, Sarah; Wendland, Jens R.; Wolanczyk, Tomasz; Worbe, Yulia; Zai, Gwyneth; Goes, Fernando S.; McLaughlin, Nicole; Nestadt, Paul S.; Grabe, Hans-Jörgen; Depienne, Christel; Konkashbaev, Anuar; Lanzagorta, Núria; Valencia-Duarte, Ana; Bramon, Elvira; Buccola, Nancy; Cahn, Wiepke; Cairns, Murray; Chong, Siow A.; Cohen, David; Crespo-Facorro, Benedicto; Crowley, James; Davidson, Michael; DeLisi, Lynn; Dinan, Timothy; Donohoe, Gary; Drapeau, Elodie; Duan, Jubao; Haan, Lieuwe; Hougaard, David; Karachanak-Yankova, Sena; Khrunin, Andrey; Klovins, Janis; Kučinskas, Vaidutis; Keong, Jimmy Lee Chee; Limborska, Svetlana; Loughland, Carmel; Lonnqvist, Jouko; Maher, Brion; Mattheisen, Manuel; McDonald, Colm; Murphy, Kieran C.; Nenadic, Igor; Van Os, Jim; Pantelis, Christos; Pato, Michele; Petryshen, Tracey; Quested, Digby; Roussos, Panos; Sanders, Alan R.; Schall, Ulrich; Schwab, Sibylle G.; Sim, Kang; So, Hon-Cheong; Stogmann, Elisabeth; Subramaniam, Mythily; Toncheva, Draga; Waddington, John; Walters, James; Weiser, Mark; Cheng, Wei; Cloninger, Robert; Curtis, David; Gejman, Pablo V.; Henskens, Frans; Mattingsdal, Morten; Oh, Sang-Yun; Scott, Rodney; Webb, Bradley; Breen, Gerome; Churchhouse, Claire; Bulik, Cynthia M.; Daly, Mark; Dichgans, Martin; Faraone, Stephen V.; Guerreiro, Rita; Holmans, Peter; Kendler, Kenneth S.; Koeleman, Bobby; Mathews, Carol A.; Price, Alkes; Scharf, Jeremiah; Sklar, Pamela; Williams, Julie; Wood, Nicholas W.; Cotsapas, Chris; Palotie, Aarno; Smoller, Jordan W.; Sullivan, Patrick; Rosand, Jonathan; Corvin, Aiden; Neale, Benjamin M. (Peer reviewed; Journal article, 2018)
    • Associations between personality disorders and cannabis use and cannabis use disorder: a population‐based twin study 

      Gillespie, Nathan A.; Aggen, Steven H.; Neale, Michael C.; Knudsen, Gun Peggy S.; Krueger, Robert F.; South, Susan C.; Czajkowski, Nikolai Olavi; Nesvåg, Ragnar; Ystrøm, Eivind; Kendler, Kenneth S.; Reichborn-Kjennerud, Ted (Peer reviewed; Journal article, 2018)
    • Development of ADHD symptoms in preschool children: Genetic and environmental contributions 

      Eilertsen, Espen Moen; Gjerde, Line C.; Kendler, Kenneth S.; Røysamb, Espen; Aggen, Steven H.; Gustavson, Kristin; Reichborn-Kjennerud, Ted; Ystrøm, Eivind (Peer reviewed; Journal article, 2018)
    • Does low alcohol use increase the risk of sickness absence? A discordant twin study 

      Østby, Kristian Amundsen; Czajkowski, Nikolai Olavi; Knudsen, Gun Peggy; Ystrøm, Eivind; Gjerde, Line C.; Kendler, Kenneth S.; Ørstavik, Ragnhild; Reichborn-Kjennerud, Ted (Journal article, 2016)
    • Explaining the association between anxiety disorders and alcohol use disorder: A twin study 

      Torvik, Fartein Ask; Rosenström, Tom Henrik; Gustavson, Kristin; Ystrøm, Eivind; Kendler, Kenneth S.; Bramness, Jørgen Gustav; Czajkowski, Nikolai Olavi; Reichborn-Kjennerud, Ted (Peer reviewed; Journal article, 2019)
    • Genomic Relationships, Novel Loci, and Pleiotropic Mechanisms across Eight Psychiatric Disorders. 

      Lee, Phil H.; Antilla, Verneri; Won, Hyejung; Bettella, Francesco; Agartz, Ingrid; Dale, Anders; Nærland, Terje; Elvsåshagen, Torbjørn; Ødegaard, Ketil Joachim; Melle, Ingrid; Knudsen, Gun Peggy Strømstad; Le Hellard, Stephanie; Reichborn-Kjennerud, Ted; Smeland, Olav Bjerkehagen; Andreassen, Ole Andreas; Neale, Benjamin M; Kendler, Kenneth S.; Smoller, Jordan W. (Peer reviewed; Journal article, 2019)
    • Joint factorial structure of psychopathology and personality 

      Rosenström, Tom Henrik; Gjerde, Line C.; Krueger, Robert Frederick; Aggen, Steven H.; Czajkowski, Nikolai Olavi; Gillespie, Nathan A.; Kendler, Kenneth S.; Reichborn-Kjennerud, Ted; Torvik, Fartein Ask; Ystrøm, Eivind (Peer reviewed; Journal article, 2018)
    • Maternal perinatal and concurrent depressive symptoms and child behavior problems: a sibling comparison study 

      Gjerde, Line C.; Eilertsen, Espen Moen; Reichborn-Kjennerud, Ted; McAdams, Tom A.; Zachrisson, Henrik Daae; Zambrana, Imac Maria; Røysamb, Espen; Kendler, Kenneth S.; Ystrøm, Eivind (Peer reviewed; Journal article, 2017)
    • Maternal perinatal and concurrent depressive symptoms and child behavior problems: a sibling comparison study 

      Gjerde, Line C.; Eilertsen, Espen Moen; Reichborn-Kjennerud, Ted; McAdams, Tom A.; Zachrisson, Henrik Daae; Zambrana, Imac Maria; Røysamb, Espen; Kendler, Kenneth S.; Ystrøm, Eivind (Peer reviewed; Journal article, 2017)
    • Specific Antisocial and Borderline Personality Disorder Criteria and General Substance Use: A Twin Study 

      Rosenström, Tom Henrik; Torvik, Fartein Ask; Ystrøm, Eivind; Aggen, Steven H.; Gillespie, Nathan A.; Krueger, Robert F.; Czajkowski, Nikolai Olavi; Kendler, Kenneth S.; Reichborn-Kjennerud, Ted (Peer reviewed; Journal article, 2020)
    • Stability and change in etiological factors for alcohol use disorder and major depression 

      Torvik, Fartein Ask; Rosenström, Tom Henrik; Ystrøm, Eivind; Tambs, Kristian; Røysamb, Espen; Czajkowski, Nikolai Olavi; Gillespie, Nathan; Knudsen, Gun Peggy; Kendler, Kenneth S.; Reichborn-Kjennerud, Ted (Peer reviewed; Journal article, 2017)
    • Stressful life events increase the risk of major depressive episodes: A population-based twin study 

      Bjørndal, Ludvig Daae; Kendler, Kenneth S.; Reichborn-Kjennerud, Ted; Ystrøm, Eivind (Peer reviewed; Journal article, 2022)
    • The structure of genetic and environmental influences on normative personality, abnormal personality traits, and personality disorder symptoms 

      Kendler, Kenneth S.; Aggen, Steven H.; Gillespie, Nathan; Krueger, Robert F.; Czajkowski, Nikolai Olavi; Ystrøm, Eivind; Reichborn-Kjennerud, Ted (Peer reviewed; Journal article, 2019)