[Changes in hospital infections].
Seki
Masafumi
M
Kouno
Shigeru
S
D003428:Cross Infection / Q000453:epidemiology*; D005767:Gastrointestinal Diseases / Q000453:epidemiology; D006801:Humans; D007564:Japan / Q000453:epidemiology; D011014:Pneumonia / Q000453:epidemiology