“…Ulcerative colitis in 50-60" " of cases (Brunsting et al, 1930); local enteritis (Stathers, Abbott & McGuinness, 1967); rheumatoid arthritis (Philpott, Goltz & Park, 1966); viral infection (Van der Meiren, Achter & Kestelyn, 1963); focal sepsis (Hofstad, 1959); diabetes (Philpott et al, 1966); hypogammagiobulinaemia (Karltorp, 1963); monoclonal gammopathies preceding multiple myeloma (Van der Sluis, 1966;Jablonska, Stachow & Dabrowska, 1967;Thivolet & Beyvin, 1967;Cream, 1971); alteration in humoral or cellular immunity (Long & Uesu, 1964;Delescluse, Bast & Achten, 1972).…”