RT Journal Article SR Electronic T1 Hepatitis D prevalence: problems with extrapolation to global population estimates JF Gut JO Gut FD BMJ Publishing Group Ltd and British Society of Gastroenterology SP 396 OP 397 DO 10.1136/gutjnl-2018-317874 VO 69 IS 2 A1 Alexander J Stockdale A1 Benno Kreuels A1 Marc R Y Henrion A1 Emanuele Giorgi A1 Irene Kyomuhangi A1 Anna Maria Geretti YR 2020 UL http://gut.bmj.com/content/69/2/396.abstract AB