[1] Royal Free Hosp, Cardiol, London, England
[2] Barking Havering & Redbridge Univ Hosp Natl Hlth, Internal Med, London, England
[3] Barking Havering & Redbridge Univ Hosp Natl Hlth, Geriatr, London, England
[4] Barking Havering & Redbridge Univ Hosp Natl Hlth, Internal Med & Diabet & Endocrinol, London, England