RT Journal Article SR Electronic T1 Health Care in Japan JF Journal of Epidemiology and Community Health JO J Epidemiol Community Health FD BMJ Publishing Group Ltd SP 329 OP 329 DO 10.1136/jech.44.4.329 VO 44 IS 4 A1 Tamami Umeda YR 1990 UL http://jech.bmj.com/content/44/4/329.1.abstract AB