1. Instituto Nacional de Antropología e Historia-Tlaxcala, Tlaxcala, Mexico
2. Boston University, Boston, MA, USA
3. The Pennsylvania State University, State College, PA, USA
4. California Council on Science and Technology, California’s Governor’s Office of Business and Economic Development, Sacramento, CA, USA
5. Laboratorio CODICE, Coordinación Nacional de Conservación del Patrimonio Cultural, Instituto Nacional de Antropología e Historia, Mexico City, Mexico