[1] Univ Newcastle Upon Tyne, Wolfson Unit Clin Pharmacol, Newcastle Upon Tyne NE2 4HH, Tyne & Wear, England
[2] Univ Newcastle Upon Tyne, No Reg Drugs & Therapeut Ctr, Newcastle Upon Tyne NE1 7RU, Tyne & Wear, England
[3] Univ Newcastle Upon Tyne, Inst Ageing & Hlth, Newcastle Upon Tyne NE1 7RU, Tyne & Wear, England