TY - RPRT TI - Factorial Mendelian randomization: using genetic variants to assess interactions AU - Rees, J. M. AU - Foley, C. N. AU - Burgess, S. PY - 2019 DO - 10.1101/531228 UR - https://www.biorxiv.org/content/10.1101/531228v1 ID - 10.1101/531228 ER -