[1] F Hoffmann La Roche Ltd, Basel, Switzerland
[2] Genentech Inc, 460 Point San Bruno Blvd, San Francisco, CA 94080 USA
[3] Roche Prod Ltd, Welwyn Garden City AL7 3AY, Herts, England
[4] Royal Victoria Infirm, Dept Paediat Endocrinol, Newcastle Upon Tyne, Tyne & Wear, England
[5] Univ Ottawa, Childrens Hosp Eastern Ontario, Div Neurol, Dept Pediat, Ottawa, ON, Canada
[6] Catholic Univ, Pediat Neurol Inst, Rome, Italy
[7] Fdn Policlin Gemelli IRCCS, Nemo Pediat, Rome, Italy
[8] Birmingham Womens & Childrens NHS Fdn Trust, Birmingham, W Midlands, England
[9] Univ Ottawa, Childrens Hosp Eastern Ontario, Div Endocrinol, Dept Pediat, Ottawa, ON, Canada
[10] Childrens Hosp Eastern Ontario, Res Inst, Ottawa Pediat Bone Hlth Res Grp, Ottawa, ON, Canada