Best Jennifer M, O'Shea Siobhan, Tipples Graham, Davies Nicholas, Al-Khusaiby Saleh M, Krause Amanda, Hesketh Louise M, Jin Li, Enders Gisela
Guy's, King's and St Thomas's School of Medicine, St Thomas's Hospital, London SE1 7EH.
BMJ. 2002 Jul 20;325(7356):147-8. doi: 10.1136/bmj.325.7356.147.