[1] St Thomas Hosp, Dept Chem Pathol, London, England
[2] St Thomas Hosp, Nutristasis Unit GSTS Pathol, London, England
[3] St Thomas Hosp, Dept Clin Pharmacol, London SE1 7EH, England
[4] Guys Hosp, Osteoporosis Screening Unit, London SE1 9RT, England
[5] Guys Hosp, Renal Unit, London SE1 9RT, England