TY - RPRT TI - Extending Causality Tests With Genetic Instruments: An Integration Of Mendelian Randomization And The Classical Twin Design AU - Minica, C. C. AU - Dolan, C. V. AU - Boomsma, D. I. AU - de Geus, E. AU - Neale, M. C. PY - 2017 DO - 10.1101/134585 UR - https://www.biorxiv.org/content/10.1101/134585v1 ID - 10.1101/134585 ER -