- Generalized Method of Moments (GMM) estimator
 - MR with a time-to-event outcome
 - Non-parametric methods with bounds of causal effect
 - Polygenic risk score approach
 - Structural Mean Models (SMMs)
 - Two-stage least squares (TSLS)
 - Two-stage least squares (TSLS) with binary outcomes
 - Two-stage predictor substitution estimators
 - Two-stage residual inclusion estimators
 - Within-family MR
 
