TY - JOUR A1 - Bengtsson, T. A1 - Dribe, M. T1 - Quantifying the family frailty effect in infant and child mortality by using median hazard ratio (MHR): The case of rural Sweden, 1766–1895 Y1 - 2010 DO - 10.1080/01615440903270299 JF - Historical Methods VL - 43 IS - 1 ER -