Cohort I
Cohort II
Yokote (Akita)
Kashiwazaki (Niigata)
Ninohe (Iwate)
Saku (Nagano)
Kamigoto (Nagasaki)
Mito (Ibaraki)
Katsushika (Tokyo)
Suita (Osaka)
Chubu (Okinawa)
Miyako (Okinawa)
Chuohigashi (Kochi)