[1] Massachusetts Gen Hosp, Neuroendocrinol Unit, Boston, MA 02114 USA
[2] Massachusetts Gen Hosp, Div Endocrine, Boston, MA 02114 USA
[3] Massachusetts Gen Hosp, Dept Med, Gen Clin Res Ctr, Boston, MA 02114 USA
[4] Massachusetts Gen Hosp, Dept Neuropathol, Boston, MA 02114 USA
[5] Massachusetts Gen Hosp, Dept Neurosurg, Boston, MA 02114 USA
[6] Harvard Univ, Sch Med, Boston, MA 02114 USA