References
- Moynihan BGA. On duodenal ulcer: with notes of 52 operations. Lancet 1905;1:340–6.
- Horrocks JC, de Dombal FT. Clinical presentation of patients with "dyspepsia". Detailed symptomatic study of 360 patients. Gut 1978;19:19–26.
- Warndorff DK, Knottnerus JA, Huijnen LGL, Starmans R. How well do general practitioners manage dyspepsia? JR Coll Gen Pract 1989;39:499–502.
- Muris JWM, Starmans R, Fijten GH, Crebolder HFJM, Krebber TFWA, Knottnerus JA. Abdominal pain in gen-eral practice. Fam Pract 1993;10:387–400.
- Klinkman MS. Episodes of care for abdominal pain in a primary care practice. Arch Fam Med 1996;5:279–85.
- Talley NJ, McNeil D, Piper DW. Discriminant value of dyspeptic symptoms: A study of the clinical presentation of 221 patients with dyspepsia of unknown cause, peptic ulcereration, and cholelithiasis. Gut 1987;28: 40–6.
- Johannessen T, Petersen H, Kleveland PM, Dybdahl JH, Sandvik AK, Brenna E, et al. The predictive value of history in dyspepsia. Scand J Gastroenterol 1990;25:689–97.
- Mansi C, Savarino V, Mela GS, Picciotto A, Mele MR, Celle G. Are clinical patterns of dyspepsia a valid guideline for appropriate use of endoscopy? A report on 2253 dys-peptic patients. Am J Gastroenterol 1993;88:1011–5.
- Crean GP, Holden RJ, Knill-Jones RP, Beattie AD, James WB, Marjoribanks FM, et al. A database on dyspepsia. Gut 1994;35:191–202.
- Numans ME, van der Graaf Y, de Wit NJ, Touw-Otten FWMM, de Melker RA. How much ulcer is ulcer-like? Diagnostic determinants of peptic ulcer in open access gastroscopy. Fam Pract 1994;11:382–8.
- Colin-Jones DG, Bloom B, Bodemar G, Crean G, Freston J, Gugler R, et al. Management of dyspepsia. Report of a working party. Lancet 1988;1:576–9.
- Heikkinen M, Pikkarainen P, Takala J, Räsanen H, Julkunen R. Etiology of dyspepsia: Four hundred unse-lected consecutive patients in general practice. Scand J Gastroenterol 1995;30:519–23.
- Blackstone MO. The duodenum — variations from the normal appearance. In: Blackstone MO, editor. Endo-scopic interpretation. New York: Raven Press, 1984:234–41.
- Schoenfield LJ, Carulli N, Dowling RH, Sama C, Wolpers C. Asymptomatic gallstones: Definition and treatment. Working Team Report. Gastroenterology Int 1989;2:25–9.
- Kagevi I, L8fstedt S, Persson L-G. Endoscopic findings and diagnoses in unselected dyspeptic patients at a primary health care center. Scand J Gastroenterol 1989;24:145–50.
- Heikkinen M, Pikkarainen P, Takala J, Julkunen R. Gen-eral practitioners' approach to dyspepsia. Survey of consul-tation frequencies, treatment, and investigations. Scand J Gastroenterol 1996;31:648–53.
- Lance P, Gibson-Glubb S, Gazzard JA, Gazzard BG. Chronic dyspepsia pain in general practice — its causes and diagnosis. Postgrad Med J 1985;61:411–3.
- Klauser AG, Schindlbeck NE, Miiller-Lissner SA. Symp-toms in gastro-oesophageal reflux disease. Lancet 1990;335:205–8.
- Mann J, Holdstock G, Harman M, Machin D, Loehry CA. Scoring system to improve cost effectiveness of open access endoscopy. Br Med J 1983;287:937–40.
- Fjosne U, Kleveland PM, Waldum H, Halvorsen T, Pe-tersen H. The clinical benefit of routine upper gastrointesti-nal endoscopy. Scand J Gastroenterol 1986;21:433–40.
- Holdstock G, Harman M, Machin D, Patel C, Lloyd RS. Prospective testing of a scoring system designed to improve case selection for upper gastrointestinal investigation. Gas-troenterology 1986;90:1164 —9.