#BestACR20Tweets RT @doctorRBC : ⬆️General provider awareness of IgG4-RD reflected in ⬆️IgG subclass testing but number of IgG4-RD dx did not change. ⬆️testing for hepatobiliary and orbital dz ⬇️testing retroperitoneal fibrosis #ACR20 Abs#1619 https://t.co/IkzrLfeJ7d https://t.co/gShfJaxwNA