1 Rheumatology Division, National Institute of Rehabilitation Luis Guillermo Ibarra Ibarra, Mexico City, Mexico. luis_jara_quezada@hotmail.com.
2 Universidad Nacional Autónoma de Mexico, Mexico City, Mexico. luis_jara_quezada@hotmail.com.
3 Universidad Nacional Autónoma de Mexico, Mexico City, Mexico.
4 Internal Medicine Department, Hospital de Especialidades "Dr. Antonio Fraga Mouret", Instituto Mexicano del Seguro Social, Centro Médico Nacional La Raza, Mexico City, Mexico.
5 International School of Medicine, Istanbul Medipol University, Istanbul, Turkey.
6 National Institute of Rehabilitation Luis Guillermo Ibarra Ibarra, Mexico City, Mexico.
7 Department of Medicine, Ariel University, Ariel, Israel.