[1] UNIV HOSP GENEVA, DIV ENDOCRINOL, CH-1211 GENEVA, SWITZERLAND
[2] UNIV HOSP GENEVA, DIV RADIODIAGNOST, CH-1211 GENEVA, SWITZERLAND
[3] UNIV HOSP GENEVA, DIV PATHOL, CH-1211 GENEVA, SWITZERLAND
[4] CERN, DIV EP, CH-1211 GENEVA 23, SWITZERLAND
[5] UNIV OXFORD, OXFORD, ENGLAND
[6] UNIV MANCHESTER, DEPT MED BIOPHYS, MANCHESTER M13 9PL, LANCS, ENGLAND
[7] ROYAL MARSDEN HOSP, DEPT PHYS, LONDON, ENGLAND