R. Frey

[Coronary artery spasms with normal coronary arteries as the cause of recurrent ventricular fibrillations].

O. Hess, W. Siegenthaler, C. Graf, 1981, Schweizerische medizinische Wochenschrift.

Diagnosis of bacterial overgrowth after culturing proximal small-bowel aspirate obtained during routine upper gastrointestinal endoscopy.

C. Beglinger, P. Bardhan, K. Gyr, 1992, Scandinavian journal of gastroenterology.

[Pre-leukemia: incidence and characteristics of preleukemic conditions].

C. Benöhr, R. Frey, D. Müller, 1974, Die Medizinische Welt.