TY - RPRT TI - Corrected group prognostic curves and summary statistics. AU - I M Chang AU - R Gelman AU - M Pagano PY - 1982 DO - 10.1016/0021-9681(82)90019-4 UR - https://pubmed.ncbi.nlm.nih.gov/7096530/ ID - 7096530 ER -