TY - RPRT TI - Non-ignorable missing covariates in generalized linear models. AU - S R Lipsitz AU - J G Ibrahim AU - M H Chen AU - H Peterson DO - 10.1002/(sici)1097-0258(19990915/30)18:17/18<2435::aid-sim267>3.0.co;2-b UR - https://pubmed.ncbi.nlm.nih.gov/10474151/ ID - 10474151 ER -