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Muñoz, Johanna; Efthimiou, Orestis; Audigier, Vincent; de Jong, Valentijn M T; Debray, Thomas P A (2024). Multiple imputation of incomplete multilevel data using Heckman selection models. Statistics in medicine, 43(3), pp. 514-533. Wiley-Blackwell 10.1002/sim.9965
