[NEC health care system].
Ikeda
H
H
Ichino
Y
Y
Yoshida
Y
Y
Tsuchiya
K
K
Okabayashi
A
A
Sakai
T
T
Kotani
A
A
D003201:Computers; D004560:Electricity; D006801:Humans; D007564:Japan; D009786:Occupational Health Services / Q000458:organization & administration*