TY - JOUR A1 - Mian, I.U.H. A1 - Shoukri, M.M. A1 - Tracy, D.S. T1 - Maximum likelihood estimation of sibling correlations in the analysis of family data Y1 - 1991 DO - 10.1016/0378-3758(91)90086-T VL - 27 IS - 1 ER -