TY - RPRT TI - A group sequential, response-adaptive design for randomized clinical trials. AU - Theodore G Karrison AU - Dezheng Huo AU - Rick Chappell PY - 2003 DO - 10.1016/s0197-2456(03)00092-8 UR - https://pubmed.ncbi.nlm.nih.gov/14500050/ ID - 14500050 ER -