“…These include the infections (S0ltoft and Seberg, 1972;Davidson et al, 1975), pernicious anaemia (Odgers and Wangel, 1968), chronic gastritis unassociated with pernicious anaemia, coeliac disease (Douglas et al, 1970), tropical and temperate sprue (Swanson and Thomassen, 1965;Drummond and Montgomery, 1970), ulcerative colitis and Crohn's disease (Skinner and Whitehead, 1974), and alpha chain disease (Manousos et al, 1974). There is sufficient evidence from these studies that further investigation using the more elaborate and accurate methods outlined-above will yield much more valuable data.…”