R. Chu, L. Thabane, J. Ma, A. Holbrook, E. Pullenayegum, и P. Devereaux. BMC medical research methodology, 11 (1):
21(января 2011)5966<m:linebreak></m:linebreak>M3: 10.1186/1471-2288-11-21;<m:linebreak></m:linebreak>Mesures de contrast; Mixed models; GEE; RCT.