TY - RPRT TI - Stratified randomization for clinical trials. AU - W N Kernan AU - C M Viscoli AU - R W Makuch AU - L M Brass AU - R I Horwitz PY - 1999 DO - 10.1016/s0895-4356(98)00138-3 UR - https://pubmed.ncbi.nlm.nih.gov/9973070/ ID - 9973070 ER -