Wyniki wyszukiwania
Controlled Clinical Trials > 1997 > 18 > 6 > 580-593
Journal of Clinical Epidemiology > 1997 > 50 > 10 > 1089-1098
Controlled Clinical Trials > 1996 > 17 > 1 > 1-12
Journal of Clinical Epidemiology > 1995 > 48 > 1 > 159-163