Ezo tô bi shi kô (a historical study of smallpox and syphilis in the Island of Ezo).
D006801:Humans; D007564:Japan; D008511:Medicine; D012899:Smallpox / Q000266:history*; D013587:Syphilis / Q000266:history*
MEDICINE/in Japan; SMALLPOX/history; SYPHILIS/history