Meeting abstracts from the 64th British Thyroid Association Annual Meeting. Issue 1 (February 2017) - Bartalena, Luigi; Fliers, Eric; Hellen, Nicola; Taylor, Peter; Lacey, Arron; Thayer, Daniel; Yusof, Mohd; Tabasum, Arshiya; Muller, Illaria; Marsh, Luke; Ludgate, Marian; Rees, Alex; et al.