Delayed unmasking and selection bias.
National Cancer Institute and Biometry Research Group, University of Maryland Baltimore County, 9609 Medical Center Drive, Rockville, MD, 20850, USA.
Vance W
VW
Berger
Department of Biostatistics, Gillings School of Global Public Health, University of North Carolina-Chapel Hill, Chapel Hill, NC, 27599, USA. rcagnor@live.unc.edu.
Rebecca
R
Agnor
D006801:Humans; D015983:Selection Bias