Department of Gastroenterology and Hepatology;
Hamad Medical Corporation;
Doha;
Qatar;
Department of Immunology;
Hamad Medical Corporation;
Doha;
Qatar;
Department of Haematology;
Hamad Medical Corporation;
Doha;
Qatar;
Department of Histopathology;
Hamad Medical Corporation;
Doha;
Qatar;
Department of Medical Statistics and Epidemiology;
Hamad Medical Corporation;
Doha;
Qatar;