Evaluation of Data for Multi-Regional Trials: A Three-Layer ApproachByNami Maruyama,Shigeyuki Toyoizumi,Osamu Komiyama,Satoshi Hashigaki,Naoki Isogawa,Nobushige Matsuoka,Tamotsu Yoshiyama,Shintaro HiroNovember 1st 2013Planning for ethnic sensitivity from a scientific and regulatory perspective.