Answers are grounded in this paper and cite their sources.
Ronald W Raven, O.B.E.; Carcinoma of the œsophagus: A clinico-pathological study, British Journal of Surgery, Volume 36, Issue 141, 5 December 2005, Pages 70–73
No takes yet. Share an insight, caveat, or question.
Ronald W. Raven (1948) studied this question.
Synapse has enriched 10 related papers. Consider them for comparative context: