Audigé L, Hanson B, Kopjar B. Issues in the planning and conduct of non-randomised studies. Injury. 2006 Apr;37(4):340-8. Epub 2006 Feb 17.
Audigé L, Hanson B, Kopjar B. Issues in the planning and conduct of non-randomised studies. Injury. 2006 Apr;37(4):340-8. Epub 2006 Feb 17.