1. College of Health, The University of Montana, Missoula, MT 59812, USA
2. Universidad del Valle de México, Mexico City 14370, Mexico
3. Radiology Department, HMG, Mexico City 04380, Mexico
4. Otorrinolaryngology Department, Instituto Nacional de Cardiología, Mexico City 14080, Mexico
5. Facultad de Farmacia y Bioquímica, Universidad de Buenos Aires, Buenos Aires C1113 AAD, Argentina
6. Universidad Autónoma de Piedras Negras, Piedras Negras 26000, Mexico
7. Instituto de Ciencias de la Atmósfera y Cambio Climático, Universidad Nacional Autónoma de México, Mexico City 04510, Mexico
8. Sacramento Metropolitan Air Quality Management District, Sacramento, CA 95814, USA
9. West Virginia University, Morgantown, WV 26506, USA
10. Interdisciplinary Statistical Research Unit, Indian Statistical Institute, Kolkata 700108, India