Gluud Christian, Hilden Jørgen
Copenhagen Trial Unit, Center for Clinical Intervention Research, Rigshospitalet, Copenhagen University Hospital, Blegdamsvej 9, Copenhagen, Denmark.
Prev Med. 2009 Jun;48(6):600-3. doi: 10.1016/j.ypmed.2009.04.001. Epub 2009 Apr 10.