Selection of best randomized controlled trials of Japanese Kampo medicines: Introduction of the trials and the hardships in their conduction. - Motoo, Yoshiharu; Tominaga, Kazunari; Suzuki, Hidekazu; Kaido, Toshimi; Matsuda, Chu; Morita, Satoshi; Kogure, Toshiaki; Arai, Ichiro; Tsutani, Kiichiro (Traditional & Kampo Medicine, 2025)