1. Department of Psychology, University of Iowa, Iowa City, Iowa;
2. Nanyang Institute of Technology, Zhang Zhongjing College of Chinese Medicine, Nanyang, Henan Province, China
3. Department of Pharmacology, University of Iowa, Iowa City, Iowa; and
4. Department of Health and Human Physiology, University of Iowa, Iowa City, Iowa;
5. François M. Abboud Cardiovascular Center, University of Iowa, Iowa City, Iowa; and