(July 22, 2019, 12:51 PM EDT) -- FORT SMITH, Ark. — An Arkansas woman on July 18 sued Pfizer Inc., alleging that the drug maker failed to warn U.S. patients that the rheumatoid arthritis drug Xeljanz could cause sepsis that resulted in quadruple amputation (Marilyn Stube, et al. v. Pfizer, Inc., No. 19-6087, W.D. Ark.)....