“…More recently, however, reports of cases have raised the possibility that the syndrome might not be so uncommon (Atkinson et al, 1961;Dobbins, 1963;Freeark et al, 1964;Dagradi et al, 1966;Homes, 1966), and in series where early endoscopy has been used routinely in the investigation of haematemesis and melaena the incidence has been found to be 2-0% (Katz et al, 1965), 2-7% (Jones, 1969), 5-1% (Palmer, 1970), and 4-7% (Pitcher, 1972). An incidence of 14-7% was reported in the United States army and veteran patients (Wells, 1967), but there was an unduly high proportion of alcoholics in this group.…”