TY - JOUR A1 - Kennedy, S. A1 - Kidd, M.P. A1 - McDonald, J.T. A1 - Biddle, N. T1 - The healthy immigrant effect: Patterns and evidence from four countries Y1 - 2015 DO - 10.1007/s12134-014-0340-x VL - 16 IS - 2 ER -