RT Journal A1 Thorogood M T1 RIsk of stroke in users of oral contraceptives JF JAMA JO JAMA YR 1999 FD April 14 VO 281 IS 14 SP 1255 OP 1256 DO 10.1001/jama.281.14.1255 UL http://dx.doi.org/10.1001/jama.281.14.1255 AB Journal Scan Archive November 1998 http://www.ama-assn.org/contraPosted February 8, 1999