URL：https://www.researchgate.net/publication/347971187/figure/fig1/AS:975606141440000@1609614038830/The-basic-design-of-a-randomized-controlled-trial-RCT.png
掲載元：https://www.researchgate.net/figure/The-basic-design-of-a-randomized-controlled-trial-RCT_fig1_347971187
