Classifying the unclassifiable – A Delphi study to reach consensus on the fibrotic nature of diseases - Massen, GM; Allen, RJ; Leavy, OC; Selby, NM; Aithal, GP; Oliver, N; Parfrey, H; Wain, LV; Jenkins, G; Stewart, I; Quint, JK; DEMISTIFI, consortium (QJM: an international journal of medicine, 2023)