Layton JB, Butler AM, Brookhart MA, Panozzo CA. Variation in rotavirus vaccination coding in US State Medicaid data. Presented at the 35th ICPE International Conference on Pharmacoepidemiology & Therapeutic Risk Management; August 28, 2019. Philadelphia, PA. [abstract] Pharmacoepidemiol Drug Saf. 2019 Aug 20; 28(S2):852. doi: 10.1002/pds.4864