# Ladder option brokers

( 2018 Nat. Commun. ) paper. In the mtCOJO analysis, we used the GSMR method to estimate the effect of x on y, the mtCOJO estimate is free of the collider bias as described in Aschard et al.

( 2015 AJHG ).

( 2018 Nat. Commun. ) paper. In the mtCOJO analysis, we used the GSMR method to estimate the effect of x on y, the mtCOJO estimate is free of the collider bias as described in Aschard et al.

( 2015 AJHG ).