1. Faculty of Nursing, Thammasat University, Khlong Nueng 12120, Thailand
2. Faculty of Nursing, Rattana Bundit University, Khlong Nueng 12160, Thailand
3. Department of Anthropology, University of Alabama, Tuscaloosa, AL 35401, USA
4. Department of Geography and the Environment, University of Alabama, Tuscaloosa, AL 35401, USA
5. Department of Biology, University of Alabama, Tuscaloosa, AL 35401, USA