1. R. Burton, The Anatomy of Melancholy, Vol. 1, Part I, Section 2: Causes of Melancholy, William Tegg, London (1906); originally 1621.
2. R. H. Warner and H. L. Rosett, J. Stud. Alcohol 36: 1395 (1975).
3. W. C. Sullivan, J. Ment. Sci. 45: 489 (1899).
4. P. Lemoine, H. Haronsseau, J.-P. Borteryu, and J. C. Menuet, Ouest Med. 25: 476 (1968).
5. C. Ulleland, R. P. Wennberg, R. P. Igo, and N. J. Smith, Pediatr. Res. 4: 474 (1970).