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3. Harry Gold, Quinidine in Disorders of the Heart, S. 40. New York: P. B. Hoeber. 1950.
4. Amer. Heart J. 33 (1947) 102; Ned. Tijdschr. v. Geneesk. 74 (1930) 3126.
5. J. Allergy 15 (1944) 392.