International forum on Occult hepatitis B infection and transfusion safety. Issue 4 (28th February 2019) - Seed, Clive R.; Allain, Jean‐Pierre; Lozano, Miquel; Laperche, Syria; Gallian, Pierre; Gross, Sylvie; Kwon, So‐Yong; Oh, Eun Young; Kim, Jun Nyun; Chua, Sze Sze; Lam, Sally; Ang, Ai Leen; et al.