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7084 upper gastrointestinal tract endoscopies in the years 1973 to 1981 revealed 1664 duodenal or gastric ulcers. The number of total ulcer observations in relation to specific months differed between 110 in the 9 June periods and 189 in the 9 October months. A convincing peak was not detected. However, the number of ulcers per month or per season was not distributed evenly, as judged by chi-Square analysis. 30% of all ulcer observations occurred in the fall, 24% in the winter, 24% in the spring and 22% in the summer. Our material did not reveal, whether the slight increase in the fall reflected a true rise in the ulcer incidence or whether it had to be attributed to seasonal variations in referrals for endoscopic examinations. Nevertheless the reported data are further evidence for the perennial rather than seasonal nature of gastroduodenal ulcers.
G Börsch, and
E M Klinkhardt, and
G Sabin, and
D Ricken
August 1986,
Medizinische Klinik (Munich, Germany : 1983),
G Börsch, and
E M Klinkhardt, and
G Sabin, and
D Ricken
February 1987,
Wiener medizinische Wochenschrift (1946),
G Börsch, and
E M Klinkhardt, and
G Sabin, and
D Ricken
January 1951,
La Rassegna di clinica, terapia e scienze affini,
G Börsch, and
E M Klinkhardt, and
G Sabin, and
D Ricken
May 1960,
La Semana medica,
G Börsch, and
E M Klinkhardt, and
G Sabin, and
D Ricken
January 1987,
Der Chirurg; Zeitschrift fur alle Gebiete der operativen Medizen,
G Börsch, and
E M Klinkhardt, and
G Sabin, and
D Ricken
January 1976,
Zeitschrift fur arztliche Fortbildung,
G Börsch, and
E M Klinkhardt, and
G Sabin, and
D Ricken
February 1976,
Zeitschrift fur arztliche Fortbildung,
G Börsch, and
E M Klinkhardt, and
G Sabin, and
D Ricken
September 1962,
Naika. Internal medicine,
G Börsch, and
E M Klinkhardt, and
G Sabin, and
D Ricken
January 1972,
Munca sanitara,
G Börsch, and
E M Klinkhardt, and
G Sabin, and
D Ricken
December 1978,
Fel'dsher i akusherka,
