Gastric flow and acidity before and after Billroth II and Billroth I for gastro-duodenal ulcer.
D004381:Duodenal Ulcer; D005743:Gastrectomy; D005750:Gastric Juice; D005763:Gastroenterostomy; D006801:Humans; D010437:Peptic Ulcer
GASTRECTOMY; GASTRIC JUICE