Yana Vinogradova research statistician, Carol Coupland associate professor and reader in medical statistics, Julia Hippisley-Cox professor of clinical epidemiology and general practice
Vinogradova Y, Coupland C, Hippisley-Cox J.
Authors’ reply to Zagarella
BMJ 2015; 350 :h3308
doi:10.1136/bmj.h3308
