Author/Authors :
Hassan، Nazia نويسنده Post graduate trainee, Department of Gastroenterology, Sylhet MAG Osmani Medical College, Sylhet, Bangladesh , , Chowdhury، Fazel Rabbi نويسنده Scientific and publication secretary, Toxicology Society of Bangladesh (TSB) Dhaka, Bangladesh. Department of Medicine, Sylhet MAG Osmani Medical Coll ,