[1] Aintree Univ Hosp NHS Fdn Trust, Neuroendocrine Tumour Grp, Liverpool L9 7AL, Merseyside, England
[2] Aintree Univ Hosp NHS Fdn Trust, Dept Cardiol, Liverpool L9 7AL, Merseyside, England
[3] Univ Liverpool, Inst Translat Med, Dept Gastroenterol, Liverpool L69 3GE, Merseyside, England
[4] Royal Liverpool Univ Hosp, Neuroendocrine Tumour Grp, Liverpool L7 8XP, Merseyside, England
[5] Univ Liverpool, Inst Ageing & Chron Dis, Dept Obes & Endocrinol, Liverpool L69 3GA, Merseyside, England