AshersonN (1951) Brit. J. Tuberc. Dis. Chest45, 138
4.
AshersonN (1952a) J. Laryng.66, 111
5.
AshersonN (1952b) Brit. J. Tuberc. Dis. Chest46, 95
6.
AshersonN (1953a) J. Laryng.67, 172
7.
AshersonN (1953b) J. int. Coll. Surg.20, 531
8.
AshersonN (1953c) Brit. J. Tuberc. Dis. Chest47, 39
9.
AshersonN (1953d) Brit. J. Tuberc. Dis. Chest47, 209
10.
AshersonN (1955) Brit. J. Tuberc. Dis. Chest49, 50
11.
BayfordD (1794) Mem. med. Soc. Lond.2, 275
12.
BacksteinJ (1953) Digestive Tract in Roentgenology. London
13.
CarterC O (1960) In: Ciba Foundation Symposium on Congenital Malformations. Ed. WolstenholmeG E WO'ConnorC M. London; p 263
14.
FlettR L (1959) Proc. R. Soc. Med.52, 215
15.
FykeF EJrCodeC F (1955) Gastroenterology29, 24
16.
HarnettW L (1943) Postgrad. med. J.19, 38
17.
HolingerP H (1961) J. Laryng.75, 1
18.
Jex-BlakeA J (1926) Lancetii, 542
19.
KruisingaR J HHuizingaE (1959) Ann. Otol.68, 115
20.
NegusV E (1942) Proc. R. Soc. Med.36, 85
21.
PostlethwaitR WSealyW C (1961) The Surgery of the Esophagus. Springfield, Ill.; p 432
22.
Registrar General (1959) Statistical Review of England and Wales for 1959. London; Part I, Tables, Medical
23.
ScottJ SWilsonJ K (1957) Lancetii, 569
24.
SjöbergA (1950) Arch. Otolaryng.52, 323
25.
SteingoldJ (1962) In: Recent Advances in Obstetrics and Gynæcology. 10th ed. Ed. BourneAWilliamsL. London; p 191
26.
World Health Organization (1948) Manual of the International Statistical Classification of Diseases, Injuries, and Causes of Death. Bull. World Hlth Org. Suppl. 1. Geneva
