Key points are not available for this paper at this time.
¶ Assistant Clinical Professor, Department of Anesthesia, University of California Medical Center, San Francisco, California.Accepted for publication July 7, 1965. Supported in part by United States Public Health Service Grants 5-K3-GM-17,685; 5R01 HE07946; 5T1-GM-63; HE06285; and 1-K6-HE-19.412.
Eger et al. (Mon,) studied this question.