PT - JOURNAL ARTICLE AU - C. W. Parr TI - AGE-SEX REGISTERS DP - 1978 Apr 01 TA - The Journal of the Royal College of General Practitioners PG - 241--241 VI - 28 IP - 189 4099 - http://bjgp.org/content/28/189/241.1.short 4100 - http://bjgp.org/content/28/189/241.1.full SO - J R Coll Gen Pract1978 Apr 01; 28