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2. Petersen, W. F. (1946).Hippocratic Wisdom, p. 110.
3. Grattan, J. H. G. and Singer, C. (1952).Anglo-Saxon Magic and Medicine, pp. 49–50.
4. Personal Communication. Nessa Doran, M.A. National Library of Ireland.
5. Francis Shaw, S.J. “Irish Medical Men and Philosophers,” Thomas Davis Lecture.