TY - RPRT TI - Modeling missingness for time-to-event data: a case study in osteoporosis. AU - Beat Neuenschwander AU - Michael Branson PY - 2004 DO - 10.1081/bip-200035478 UR - https://pubmed.ncbi.nlm.nih.gov/15587977/ ID - 15587977 ER -