TY - JOUR A1 - Wilcox, A.J. A1 - Russell, I.T. T1 - Birthweight and Perinatal Mortality: III. Towards a New Method of Analysis Y1 - 1986 DO - 10.1093/ije/15.2.188 JF - International Journal of Epidemiology VL - 15 IS - 2 SP - 188 EP - -196 ER -