Authors: Niteesh K Choudhry; Geoffrey M Anderson; Andreas Laupacis; Dennis Ross-Degnan; Sharon-Lise T Normand; Stephen B Soumerai Journal: BMJ Date: 2006-01-10
Authors: Sally J Giles; Penny Rhodes; Gill Clements; Gary A Cook; Ruth Hayton; Melanie J Maxwell; Trevor A Sheldon; John Wright Journal: Qual Saf Health Care Date: 2006-10