https://zoom.us/j/97791179955?pwd=eFMrTFNSRmhnTzBHdDBLZlgrTFRQdz09 2021-03-11 16:00: Sharp Sensitivity Analysis for Inverse Propensity Weighting via Quantile Balancing (Kevin Guo, Stanford University) 2021-03-25 13:30: Causal Inference for Nonlinear Outcome Models with Possibly Invalid Instrumental Variables (Sai Li (University of Pennsylvania))