1. School of Biosciences, Cardiff University, Cardiff, United Kingdom CF10 3US; Medical Research Council Bone Research Group, University of Cambridge, Department of Medicine, Addenbrookes Hospital (N.L.), Cambridge, United Kingdom CB2 2QQ
2. Department of Neuroendocrinology, Division of Neuroscience and Psychological Medicine, Imperial College London, Hammersmith Hospital (P.A.H.), London, United Kingdom W12 0NN
3. Division of Molecular Neuroendocrinology, National Institute for Medical Research (I.C.A.F.R.), London, United Kingdom NW7 1AA