RT Journal Article SR Electronic T1 General practitioners' use of aspirin in the secondary prevention of vascular events: knowledge, attitudes, and current practice JF British Journal of General Practice JO Br J Gen Pract FD British Journal of General Practice SP 607 OP 610 VO 49 IS 445 A1 Welton, Mark A1 Croft, Peter A1 Welton, Jan YR 1999 UL http://bjgp.org/content/49/445/607.abstract AB