Halpern, A., Shaftel, N., Selman, D., Shaftel, H.E., Kuhn, P.H., Samuels, S.S., AND Birch, H.G.: The straining forces of bowel function. Angiology , 11: 426, 1960.
2.
Charcot, J.M.: Gaz. Med. de Paris, 5: 588, 1876; cited by ENGEL, G. L., in Fainting; Physiological and Psychological Considerations, p. 36. Charles C Thomas, Publishers, Springfield, Illinois, 1950.
3.
Anoxia and cerebral damage, Lancet, 273: 529, 1957.
4.
Mccann, W.S. , Bruce, R.A., Lovejoy , F.W., Yu , P.N.G., Pearson, R., Emerson, E.B., Engel , G., AND Kelly, J.J.: Tussive syncope: observations on the disease formerly called laryngeal epilepsy, with report of two cases. Arch. Int. Med., 84: 845, 1949.
5.
Rook, A.F.: Coughing and unconsciousness: the so-called laryngeal epilepsy. Brain, 69: 138, 1946.
6.
Krainer, L.: Pathologic effects of anoxia. Am. J. Med., 25: 258, 1958.
7.
Denny-Brown, D.: The treatment of recurrent cerebrovascular symptoms and the question of vasospasm. M. Clin. North America , 35: 1457, 1951.
Walshe, F.: Diseases of the Nervous System, Ed. 9, p. 99. The Williams & Wilkins Company , Baltimore, 1958.
10.
Hamilton, W.F. , Woodbury, R.A., AND Harper, H.T., JR.: Physiologic relationships between intrathoracic, intraspinal and arterial pressures. J. A. M. A., 107: 853, 1936.
11.
Fazekas, J.F. , Bessman, A.N.: Coma mechanisms. Am. J. Med., 15: 804, 1953.
