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Park SH, Blegen MA, Spetz J, Chapman SA, De Groot HA.Park SH, et al. Among authors: chapman sa.Med Care. 2015 Jan;53(1):e1-8. doi: 10.1097/MLR.0b013e318277eb50.Med Care. 2015.PMID: 23222530
Kim KM, White JS, Max W, Chapman SA, Muench U.Kim KM, et al. Among authors: chapman sa.JAMA Netw Open. 2021 Aug 2;4(8):e2121115. doi: 10.1001/jamanetworkopen.2021.21115.JAMA Netw Open. 2021.PMID: 34406402Free PMC article.