[1] Guys Kings & St Thomas Sch Med, Dept Palliat Care & Policy, Weston Educ Ctr, London, England
[2] Guys Kings & St Thomas Sch Med, Dept Clin Stat, London, England
[3] St Christophers Hospice, London, England
[4] Univ Warwick, Ctr Primary Hlth Care Studies, Coventry CV4 7AL, W Midlands, England
[5] Palliat Care Ctr, London, England