Retraction: " folic acid supplementation, dietary folate intake during pregnancy and risk for spontaneous preterm delivery: A prospective observational cohort study"

Sengpiel, Verena; Bacelis, Jonas; Myhre, Ronny; Myking, Solveig; Pay, Aase Serine Devold; Haugen, Margaretha; Brantsæter, Anne Lise; Meltzer, Helle Margrete; Nilsen, Roy Miodini; Magnus, Per; Vollset, Stein Emil; Nilsson, Staffan; Jacobsson, Bo
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http://hdl.handle.net/11250/277433
Date
2014
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Original version
BMC Pregnancy and Childbirth 2014, 14   10.1186/1471-2393-14-202
Description
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