[1] Univ Birmingham, Birmingham B15 2TT, W Midlands, England
[2] Birmingham Womens Hosp, Reg Genet Serv, Birmingham, W Midlands, England
[3] Nova Pharmaceut Corp, Gaithersburg, MD USA
[4] John Radcliffe Hosp, Dept Paediat, Oxford, England
[5] Inst Psychiat, Genet Sect, London, England
[6] Childrens Hosp, Dept Endocrinol, Birmingham, W Midlands, England