British Homeopathic Journal, Table of Contents Br Homeopath J 1994; 83(02): 100DOI: 10.1016/S0007-0785(94)80035-9 Copyright © The Faculty of Homeopathy 1994 Change-to-open label (COLA) design A modification of the conventional parallel group design H. Walach Subject Editor: Recommend Article Abstract Buy Article Full Text
