REFERENCES
- LindsayMKM, NordinBEC, NormanAP. Med J Br 1956, 1, 14–18
- MorrisJS, AdjukiewiczAB, ReadAE. Lancet 1970, 1, 213–214
- Editorial. Br Med J 1971, 3, 634
- SmithCA. J Pediatr 1947, 30, 229–243
- HoffbrandAV. Clin Gastroenterol 1974, 3, 71–89
- Editorial. Br Med J 1973, 2, 130–131
- WeirJ, DunnJE, JonesEG. Am J Obstet Gynecol 1971, 111, 594–596
- GuttmacherAF. JAMA 1956, 161, 855–860
- BourneG. Pregnancy. Cassell, London, 1972, 532–533
- HirsonC. Lancet 1970, 1, 412
- GentAE. Digestion 1973, 8, 509–512
- BrothertonJ, CraftJL. Fértil Steril 1972, 23, 289–294