RT Journal Article SR Electronic T1 GPs as participants in scientific research. JF British Journal of General Practice JO Br J Gen Pract FD British Journal of General Practice SP 305 OP 306 VO 43 IS 372 A1 R J Kocken A1 J A Knottnerus A1 P E Smeets YR 1993 UL http://bjgp.org/content/43/372/305.2.abstract AB