“…Azar (1962) found in the material collected at the American University of Beirout the same frequency of lymphomas (11.9%) as we observed in Shiraz (Barekat, Saidi, and Dutz, 1971). It appears that lymphoma is more frequent in the Middle East than in Europe or North America (Ullmann and Abeshouse, 1932; Gall and Mallory, 1942;Marcuse and Stout, 1950;Rosenberg, Diamond, Jaslowitz, and Craver, 1961;Azar, 1962;Habibi, 1966;Barekat, Saidi, and Dutz, 1971) and that intestinal lymphoma accounts for a significant part of this increase (Azar, 1962;Ramot, Shahin, and Bubis, 1965;Eidelman et al, 1966;Habibi, 1966;Geddon, 1970;Nasr et al, 1970;Barekat et al, 1971).…”