BMC Public Health (2013) - Comments
pubmed: 23714352  doi: 10.1186/1471-2458-13-515  issn: 1471-2458 

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Ramune Jacobsen, Bo Abrahamsen, Marta Bauerek, Claus Holst, Camilla B Jensen, Joachim Knop, Kyle Raymond, Lone B Rasmussen, Maria Stougaard, Thorkild IA Sørensen, Allan A Vaag, Berit L Heitmann