1. College of Nursing & Mel & Enid Zuckerman College of Public Health, University of Arizona, Tucson, Arizona
2. College of Nursing, University of Arizona, Tucson, Arizona
3. Basic Sciences Department, University of Monterrey, Monterrey, NL, Mexico
4. Laboratory of Cellular Physiology, Northeast Center of Research, Mexican Institute of Social Security, Monterrey, NL, Mexico