1. Advanced Studies and Research Center in Dentistry “Dr Keisaburo Miyata” of Faculty of Dentistry, Autonomous University of the State of Mexico, Toluca, Mexico
2. Academic Area of Dentistry of Health Sciences Institute, Autonomous University of Hidalgo State, Pachuca, México
3. School of Dentistry, Autonomous University of Yucatan, Mexico
4. Richard M. Fairbanks School of Public Health, Indiana University/Purdue University, Indianapolis, USA
5. Indiana University Network Science Institute, Bloomington, USA