[1] Chelsea & Westminster Hosp, Beta Cell Ctr Diabet, London, England
[2] Diabet Therapies Evaluat Network, London, England
[3] Univ Surrey, Dept Hlth Care Management & Policy, Guildford GU2 5XH, Surrey, England
[4] Univ Warwick, Clin Sci Res Inst, Coventry CV4 7AL, W Midlands, England