[1] Guys & St Thomas NHS Fdn Trust, Genet Labs, London, England
[2] Nonacus Ltd, Birmingham, W Midlands, England
[3] Guys Hosp, Viapath Genet Labs, London, England
[4] Guys Hosp, Viapath Haematol Sci Labs, London, England
[5] Kings Coll London, Dept Med & Mol Genet, London, England
[6] Guys & St Thomas NHS Fdn Trust, Dept Womens Serv, London, England