(Winegar) Postgraduate Researcher in Anesthesia.
(Owen) Predoctoral Candidate in Physiology.
(Yost, Forsayeth) Assistant Professor of Anesthesia.
(Mayeri) Adjunct Professor of Physiology.
Received from the Departments of Anesthesia and Physiology, School of Medicine, University of California, San Francisco, California. Supported by a Zeneca Pharmaceuticals FAER Young Investigator Award (C. Spencer Yost) and National Institute of Health research grants GM51372 (C. Spencer Yost) and DA08373 (John R. Forsayeth). Received for publication February 22, 1996. Accepted for publication June 17, 1996.
Address reprint requests to Dr. Yost: Department of Anesthesia, School of Medicine, University of California, San Francisco, 513 Parnassus Avenue, San Francisco, California 94143–0648.