[1] Nagano Coll Nursing, Dept Hlth Sci, 694 Akaho, Komagane, Nagano 3994117, Japan
[2] Japanese Consortium Global Sch Hlth & Res, 207 Uehara, Nishihara, Okinawa 9030215, Japan
[3] Kenya Govt Med Res Ctr, POB 54840 00200,Off Mbagathi Rd, Nairobi, Kenya
[4] Nagasaki Univ, Inst Trop Med, 1-12-4 Sakamoto, Nagasaki 8528523, Japan
[5] Minist Hlth, Afya House,Cathedral Rd,POB 30016-00100, Nairobi, Kenya
[6] Minist Educ, State Dept Early Learning & Basic Educ, POB 30040-00100, Nairobi, Kenya
[7] Shinshu Univ, Fac Educ, Dept Sports & Hlth Sci, 6 Ro Nishi Nagano, Nagano, Nagano 3808544, Japan
[8] Univ Ryukyus, Sch Hlth Sci, Dept Global Hlth, 207 Uehara, Nishihara, Okinawa 9030215, Japan
[9] Tokyo Gakugei Univ, Dept Educ, 4-1-1 Nukuikita Machi, Koganei, Tokyo 1848501, Japan