1. Endocrine Sciences Research Group, Faculty of Medicine (A.J.N., D.W.M., J.R.E.D.), Manchester M13 9PT, United Kingdom
2. School of Biological Sciences (J.A.S., A.S.I.L.), University of Manchester, Manchester M13 9PT, United Kingdom
3. School of Biological Sciences (D.W.M., Z.C.S., D.G.S., M.R.H.W.), University of Liverpool, Liverpool L69 7ZB, United Kingdom