TY - JOUR A1 - Lawlor, D.A. A1 - Ebrahim, S. A1 - Smith, G.D. T1 - Sex matters: Secular and geographical trends in sex differences in coronary heart disease mortality Y1 - 2001 DO - 10.1136/bmj.323.7312.541 VL - 323 IS - 7312 ER -