RT Journal Article SR Electronic T1 Consumer and market research in health care JF Journal of Epidemiology and Community Health JO J Epidemiol Community Health FD BMJ Publishing Group Ltd SP 307 OP 307 DO 10.1136/jech.43.3.307 VO 43 IS 3 A1 Jones, Lyn YR 1989 UL http://jech.bmj.com/content/43/3/307.abstract AB