REFERENCES
- Berstad, A. Scand. J. Gastroent. 1970, 5, 343–348
- Black, J. W., Duncan, W. A. M., Durant, G. J., Ganellin, C. R. & Parsons, M. E. Nature 1972, 236, 385–390
- Domschke, E., Lux, G. & Domschke, S. Lancet 1979, 1, 320
- Manufacturer's manual, unpublished