www.who.int The World Health Organization (WHO), the directing authority for health within the United Nations system. www.path.org PATH, or the Program for Appropriate Technology in Health, is an international nonprofit organization that develops sustainable and culturally relevant technologies and solutions to improve health around the world. www.gavialliance.org The Global Alliance for Vaccines and Immunization (GAVI) is a global health partnership consisting of both private and public stakeholders in immunization which strives to improve access to immunization and strengthen immunization systems and technologies, internationally. TCP Reliable TCP Reliable is a company in Edison, NJ that specializes in temperature controlled packaging using various phase change materials. They were kind enough to send us a sample of their Phase 5 product for our project. www.gemstone.umd.edu The Gemstone Program, a program specializing in providing undergraduate students at the University of Maryland with interdisciplinary research experience. http://www.eng.umd.edu/ The A. James Clark School of Engineering at the University of Maryland. www.umd.edu The University of Maryland, College Park.