Publication Date November 1990 p 349-351 Serial Title:Weekly Epidemiological Record Serial Part:No 45 View webpage for full text https://apps.who.int/iris/bitstream/handle/10665/227811/WER6545_349-35... Keywords Health; systems: health information systems; Research; survey Regional Focus Western Pacific (WPRO) Country focus China Language English Type of material text Log in or register to post comments