RT Journal Article SR Electronic T1 Oral contraception and health: what do GPs monitor? JF British Journal of General Practice JO Br J Gen Pract FD British Journal of General Practice SP 1874 OP 1874 VO 48 IS 437 A1 Rickenbach, M YR 1998 UL http://bjgp.org/content/48/437/1874.abstract AB