[1] St Marys Hosp, Cent Manchester Univ Hosp NHS Fdn Trust, Manchester M13 9WL, Lancs, England
[2] Univ Manchester, Manchester Acad Hlth Sci Ctr, Manchester, Lancs, England
[3] Nottingham Univ Hosp NHS Trust, Clin Genet Serv, Nottingham, England
[4] Royal Childrens Hosp, Genet Hlth Serv Victoria, Parkville, Vic 3052, Australia
[5] Univ Melbourne, Dept Paediat, Melbourne, Vic, Australia
[6] Royal Childrens Hosp, Murdoch Childrens Res Inst, Melbourne, Vic, Australia
[7] Radboud Univ Nijmegen, Med Ctr, NL-6525 ED Nijmegen, Netherlands
[8] Belfast City Hosp, Belfast BT9 7AD, Antrim, North Ireland
[9] Univ London St Georges Hosp, SW Thames Reg Genet Serv, London, England
[10] Guys Hosp, SE Thames Reg Genet Serv, London SE1 9RT, England
[11] Sydney Childrens Hosp, Dept Med Genet, Randwick, NSW, Australia
[12] Katholieke Univ Leuven, Dept Menselijke Erfelijkheid, Louvain, Belgium
[13] Our Ladys Hosp Sick Children, Dublin, Ireland