[1] Soc Espanola Beneficencia, Pachuca, Hidalgo, Mexico
[2] Inst Nacl Ciencias Med & Nutr Salvador Zubiran, Dept Gastroenterol, Mexico City, DF, Mexico
[3] Inst Salud Digest & Hepat SA CV, Guadalajara, Jalisco, Mexico
[4] Consulta Privada, San Luis Potosi, Mexico
[5] ISSSEMYM, Serv Gastroenterol & Endoscopia GI, Metepec, Estado De Mexic, Mexico
[6] Fdn Clin Med Sur, Serv Gastroenterol, Mexico City, DF, Mexico
[7] Inst Nacl Ciencias Med & Nutr Salvador Zubiran, Mexico City, DF, Mexico
[8] Hosp Angeles Lomas, Clin Enfermedades Hepat, Mexico City, DF, Mexico
[9] Hosp Angeles Pedregal, Mexico City, DF, Mexico
[10] Ctr Med Zambrano Hell, Monterrey, Nuevo Leon, Mexico
[11] Hosp Especialidades Ctr Med La Raza, Ctr Med La Raza IMSS, Serv Gastroenterol, Mexico City, DF, Mexico
[12] IMSS, Ctr Med La Raza, Serv Gastroenterol Pediat, Hosp Gen, Mexico City, DF, Mexico
[13] Hosp Univ UANL, Serv Gastroenterol, Monterrey, Nuevo Leon, Mexico
[14] IMSS, Ctr Med Siglo 21, Hosp Pediat, Serv Gastroenterol, Mexico City, DF, Mexico
[15] Hosp Gen Mexico City, Serv Gastroenterol, Mexico City, DF, Mexico
[16] Hosp Angeles Clin Londres, Mexico City, DF, Mexico
[17] Hosp Especialidades Ctr Med La Raza, Ctr Med Siglo 21, IMSS, Serv Gastroenterol, Mexico City, DF, Mexico
[18] Tec Monterrey, Ctr Innovac & Educ Ejecut, Mexico City, DF, Mexico
[19] Ctr Patol Especializada SLP, San Luis Potosi, Mexico
[20] Hosp Especialidades Ctr Med La Raza, United Invest Biomed AMCCI, Durango, Mexico
[21] Tecnol Monterrey, Escuela Med & Ciencias Salud, Monterrey, Nuevo Leon, Mexico
[22] Ctr Diagnost CT Scanner Lomas Altas, Mexico City, DF, Mexico
[23] Ctr Med ABC, Mexico City, DF, Mexico
[24] Hosp Civil Guadalajara, Dept Gastroenterol, Guadalajara, Jalisco, Mexico