1. A watershed in gallstone therapy?

   • Robert R. Schade
   • David H. Van Thiel
   • Richard L. Wechsler

   Editorial Pages: 993 - 995

2. Who should conduct extracorporeal shock-wave biliary lithotripsy studies?

   • Atilla Ertan
   • Richard E. Hernandez
   • David H. Van Thiel

   Editorial Pages: 996 - 998

3. The physics and mechanics of lithotripters

   • Paul Lubock

   Review Article Pages: 999 - 1005

4. Fragmentation of biliary calculi by means of extracorporeally generated piezoelectric shock waves

   • Ch. Ell
   • W. Kerzel
   • W. Domschke

   Original Articles Pages: 1006 - 1010

5. Use of external shock-wave lithotripsy and adjuvant ursodiol for treatment of radiolucent gallstones

   • David Burnett
   • Atilla Ertan
   • Alan F. Hofmann

   Original Articles Pages: 1011 - 1015

6. Effect of enprostil on amphibian gastroduodenal and human gastric bicarbonate secretion

   • C. J. Shorrock
   • L. C. Gibbons
   • W. D. W. Rees

   Original Articles Pages: 1016 - 1020

7. Relationship ofcampylobacter pylori and duodenogastric reflux

   • S. Niemelä
   • T. Karttunen
   • J. Lehtola

   Original Articles Pages: 1021 - 1024

8. Touch cytology, a useful diagnostic method for diagnosis of upper gastrointestinal tract infections

   • J. C. Debongnie
   • C. Beyaert
   • G. Legros

   Original Articles Pages: 1025 - 1027

9. Prostaglandin protection against hemorrhage-induced gastric stress ulceration in the rat

   • T. Ranta-Knuuttila
   • T. Kiviluoto
   • E. Kivilaakso

   Original Articles Pages: 1028 - 1034

10. Effects of NC-1300, a gastric proton pump inhibitor, on healing of acetic acid-induced gastric ulcers in rats

    • Susumu Okabe
    • Hiroki Miyake
    • Shinichi Yamasaki

    Original Articles Pages: 1035 - 1042

11. Low bedtime doses of H₂-receptor antagonists for acute treatment of duodenal ulcer

    • Vincenzo Savarino
    • Giuseppe Sandro Mela
    • Guido Celle

    Original Articles Pages: 1043 - 1046

12. Randomized, double-blind comparison of famotidine with ranitidine in treatment of acute, benign gastric ulcer disease

    • Scott R. Brazer
    • Malcolm P. Tyor
    • Charles J. Catalano

    Original Articles Pages: 1047 - 1052

13. Gastric ulcer healing after laser treatment in dogs

    • S. P. Marcuard
    • D. R. Sinar
    • J. L. Finley

    Original Articles Pages: 1053 - 1056

14. Cisapride stimulates antral motility and decreases biliary reflux in patients with severe dyspepsia

    • Joffrey Rezende-Filho
    • Carlo Di Lorenzo
    • Jorge E. Valenzuela

    Original Articles Pages: 1057 - 1062

15. The hypertensive lower esophageal sphincter

    • Nahum Freidin
    • Morris Traube
    • Richard W. McCallum

    Original Articles Pages: 1063 - 1067

16. Frequent endoscopic variceal sclerotherapy increases risk of complications

    • Evangelos Akriviadis
    • Jacob Korula
    • Suyenori Yamada

    Original Articles Pages: 1068 - 1074

17. Technetium pertechnetate esophageal imaging for detection of Barrett's esophagus

    • E. J. Yegelwel
    • D. L. Bushnell
    • A. Keshavarzian

    Original Articles Pages: 1075 - 1078

18. Assessment of accuracy of intraesophageal pH probe in a dog model

    • Daniel W. Murphy
    • Kirk B. Faust
    • Donald O. Castell

    Original Articles Pages: 1079 - 1084

19. Lactase deficiency in Singapore-born and Canadian-born Chinese

    • Ivy Yap
    • Barnet Berris
    • Alan Pollard

    Original Articles Pages: 1085 - 1088

20. Prothrombotic abnormalities in inflammatory bowel disease

    • Maureen G. Conlan
    • William D. Haire
    • David A. Burnett

    Original Articles Pages: 1089 - 1093

21. Bone disease in vitamin D-deficient patients with Crohn's disease

    • H. Vogelsang
    • P. Ferenci
    • A. Gangl

    Original Articles Pages: 1094 - 1099

22. Distribution of vasoactive intestinal polypeptide and substance P receptors in human colon and small intestine

    • Louis Y. Korman
    • Hassan Sayadi
    • John W. Harmon

    Original Articles Pages: 1100 - 1108

23. Effects of pectin on fatty acid and glucose absorption and on thickness of unstirred water layer in rat and human intestine

    • Kenji Fuse
    • Tadao Bamba
    • Shiro Hosoda

    Original Articles Pages: 1109 - 1116

24. Swallowing

    • Anthony N. Kalloo
    • James H. Lewis
    • Stanley B. Benjamin

    Case Report Pages: 1117 - 1120

25. Hilar cholangiocarcinoma associated with clonorchiasis

    • Linda Sher
    • Shunzaburo Iwatsuki
    • Albert B. Zajko

    Case Report Pages: 1121 - 1123

26. Gastrointestinal myoelectric activity in an infant with congenital idiopathic motility disorder

    • Ellen L. Blank
    • Michael Karaus
    • Steven L. Werlin

    Case Report Pages: 1124 - 1131

27. Tumor-associated gastroparesis with esophageal carcinoma

    • Angela I. Choe
    • Harvey A. Ziessman
    • David E. Fleischer

    Case Report Pages: 1132 - 1134

28. Proceedings of a workshop entitled “Neuromuscular Function and Dysfunction of the Gastrointestinal Tract in Aging”

    • Joseph H. Szurszewski
    • Peter R. Holt
    • Marvin Schuster

    Conference Report Pages: 1135 - 1146

29. Book review

    • David H. Van Thiel

    BookReview Pages: 1147 - 1147

30. Duodenal diverticulum as cause of cyclic vomiting

    • F. A. Meyers
    • D. Dempsey
    • R. S. Fisher

    Letter to the Editor Pages: 1148 - 1149

31. News and notices

    News Pages: 1150 - 1152