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Feenstra B, Boyd HA, Melbye M.Feenstra B, et al. Among authors: boyd ha.Ugeskr Laeger. 2008 Oct 6;170(41):3216-20.Ugeskr Laeger. 2008.PMID: 18940150Danish.
Oyen N, Poulsen G, Boyd HA, Wohlfahrt J, Jensen PK, Melbye M.Oyen N, et al. Among authors: boyd ha.Am Heart J. 2009 Mar;157(3):467-473.e1. doi: 10.1016/j.ahj.2008.10.017. Epub 2008 Dec 23.Am Heart J. 2009.PMID: 19249416
Øyen N, Boyd HA, Poulsen G, Wohlfahrt J, Melbye M.Øyen N, et al. Among authors: boyd ha.Epidemiology. 2009 Sep;20(5):757-65. doi: 10.1097/EDE.0b013e3181ad5444.Epidemiology. 2009.PMID: 19602981