[Lupus Foundation of America LUPUS 21ST CENTURY 2018 CONFERENCE, Abstracts of the Fourth Biannual Scientific Meeting of the North and South American and Caribbean Lupus Community, Armonk, New York, USA, September 13 – 15, 2018 - ()] Clinical Sciences - CS-11 The effects of contextual sociodemographic factors and health resource concentration on hydroxychloroquine adherence among U.S. medicaid beneficiaries with lupus