1. Liver Research Centre; Centro Studi Fegato (CSF); Bldg Q - AREA Science Park- Basovizza Campus SS14 Km 163,5 Trieste Italy 34012
2. Instituto Nacional de Ciencias Médicas y Nutrición Salvador Zubirán; Department of Gastroenterology; Mexico City Distrito Federal Mexico 1400
3. National Institute of Public Health; Tobacco Research Department; 7a Cerrada de Fray Pedro de Gante #50 Col Seccion XVI, Tlalpan Mexico City Mexico City Mexico 14000
4. Medica Sur Clinic & Foundation; Dept. of Biomedical Research, Gastroenterology & Liver Unit; Puente de Piedra 150 Col. Toriello Guerra Tlalpan Mexico City Mexico 14050
5. Medica Sur Clinic & Foundation; Department of Gastroenterology; Puente Piedra 150, Col Toriello Guerra Mexico City Mexico