PT - JOURNAL ARTICLE AU - Sam Rowlands TI - Precautions after missed contraceptive pills DP - 1988 Aug 01 TA - The Journal of the Royal College of General Practitioners PG - 373--374 VI - 38 IP - 313 4099 - http://bjgp.org/content/38/313/373.3.short 4100 - http://bjgp.org/content/38/313/373.3.full SO - J R Coll Gen Pract1988 Aug 01; 38