PT - JOURNAL ARTICLE AU - D. Metson TI - Precautions after missed contraceptive pills DP - 1988 May 01 TA - The Journal of the Royal College of General Practitioners PG - 226--227 VI - 38 IP - 310 4099 - http://bjgp.org/content/38/310/226.2.short 4100 - http://bjgp.org/content/38/310/226.2.full SO - J R Coll Gen Pract1988 May 01; 38