Block & replace regime versus titration regime of antithyroid drugs for the treatment of Graves’ disease: a retrospective observational study - Vaidya, B; Wright, A; Shuttleworth, J; Donohe, M; Warren, R; Brooke, A; Gericke, C A; Ukoumunne, O C (Clin Endocrinol (Oxf), 2014)