RT Journal Article SR Electronic T1 Recruitment strategies for research. JF British Journal of General Practice JO Br J Gen Pract FD British Journal of General Practice SP 568 OP 568 VO 53 IS 492 A1 Pamela L Cross A1 Suzanne Parsons A1 Louise Letley YR 2003 UL http://bjgp.org/content/53/492/568.1.abstract AB