Sakamoto, Nobuo(en japanese)Journal of the Japanese Association of Rural Medicine,38,6,1990,p.1091–1095. DOI: 10.2185/jjrm.38.1091. ISSN: 1349-7421[Consulta: free].
Sakamoto, Nobuo(en japanese)Journal of the Japanese Association of Rural Medicine,38,6,1990,p.1091–1095. DOI: 10.2185/jjrm.38.1091. ISSN: 1349-7421[Consulta: free].