[Schistosomiasis investigation at 4 villages of Yangjiayuan during a flood in 1999].
Zhang
Yu-qi
YQ
Zhang
Juan
J
Yang
Hui
H
D000818:Animals; D002681:China / Q000453:epidemiology; D055868:Floods; D006801:Humans; D011156:Population Density; D012552:Schistosomiasis / Q000453:epidemiology*; D012908:Snails; D013997:Time Factors