RT Journal Article SR Electronic T1 Health psychology—a textbook JF Journal of Epidemiology and Community Health JO J Epidemiol Community Health FD BMJ Publishing Group Ltd SP 342 OP 342 DO 10.1136/jech.51.3.342-c VO 51 IS 3 A1 Helen Mcelroy YR 1997 UL http://jech.bmj.com/content/51/3/342.4.abstract AB