References
- Wesdorp J CE, Dekker W, Klinkenberg-Kuol E C. Gut 1983; 24: 921–924
- Temple I G, Bradby G VH, O'Connor F, Panesar K S, Mulligan T O, Robinson T J, Ward D W. Br Med J 1983; 286: 1863–1864
- Kaul B, Petersen H, Ericksen H, Myrvold H E, Grette K, Halvorsen T, Fjøsne U. Scand J Gastroenterol 1986; 21: 139–145
- Johansson K E, Boeryd B, Johansson K, Tibbling L. Scand J Gastroenterol 1986; 21: 769–778
- Nagashima R. J Clin Gastroenterol 1981; 3: 117–127, (suppl 2)
- Tarnawski A, Hollander D, Match T, Stachura J, Bogdal J. [Abstract] Gastrointest Endosc 1984; 30: 155
- Weiss W, Brunner H, Buttner G R, Gabor M, Miederer S, Mittelstedt A, Olkermann M. Swiss Med 1983; 5: 21–24
- Elsborg L, Stubgaard M, Beck B. [Abstract] Scand J Gastroenterol 1984; 19: 46, (suppl 98)
- Bradley J W. Statistical tests. Prentice-Hall, London 1968; 68–86
- Mantel N. J Am Stat Assoc 1963; 58: 690–700
- Castell D. Ann Intern Med 1986; 104: 112–114
- Tibbling L (1984) Function and disease of the oesophagus. Proceedings of a symposium. 1984, N Sandberg, A Walan. SKF, Oslo, 14–15
- Cronstedt J, Carling L, Vestergaard P, Berglund J. Acta Med Scand 1978; 204: 413–416
- Tytgat G NJ. Am J Med 1987; 83: 38–42
- Weiss W, Brunner H, Buttner G R, Gabor M, Miederer S, Mittelstedt A, Olkermann M. Dtsch Med Wochenschr 1983; 108: 1706
- Laitinen S, Ståhlberg M, Kairaluoma M I, Kiviniemi H, Pääkönen M, Lahtinen J, Poikolainen E. Scand J Gastroenterol 1985; 20: 229
- Hameetman W, Vd Boomgaard D M, Dekker W, Schrijver M, Wesdorp I CE, Tytgat G NJ. J Clin Gastroenterol, (in press)