@article{a2b104b2abcb47159bf82bb4f9706fd3,
title = "Missing covariate data in clinical research: when and when not to use the missing-indicator method for analysis",
author = "R.H.H. Groenwold and I.R. White and A.R.T. Donders and J.R. Carpenter and D.G. Altman and K.G.M. Moons",
year = "2012",
doi = "10.1503/cmaj.110977",
language = "English",
volume = "184",
pages = "1265--1269",
journal = "Canadian Medical Association Journal",
issn = "0820-3946",
publisher = "Canadian Medical Association",
number = "11",
}