TY - JOUR A1 - Carter, K. A1 - Imlach-Gunasekara, F. A1 - McKenzie, S.K. A1 - Blakely, T. T1 - Differential loss of participants does not necessarily cause selection bias Y1 - 2012 DO - 10.1111/j.1753-6405.2012.00867.x VL - 36 IS - 3 ER -