1. Alexander F (1934) The influence of psychologic factors upon gastrointestinal disturbances: a symposion. General principles, objectives and preliminary results. Psychoanal Q 3:501–539
2. Alexander-Williams J, Betts TA, Pidd S (1977) Psychiatric disturbance and the effect of gastric operations. Clin Gastroenterol 6:694–699
3. Almy TP (1973) The gastrointestinal tract in man under stress. In: Slesinger MH, Fordtran JS (eds) Gastrointestinal disease. Saunders, Philadelphia
4. Beck D (1970) Das Gallensteinleiden unter psychosomatischem Aspekt. Vandenhoeck & Ruprecht, Göttingen
5. Brandt P, Ungeheur E (1975) Das dallensteinleiden. Dtsch Ärztebl 72:565 – 567