Mohamed Mohammed Ahmed Elhassan Saeed และผู้แต่งคนอื่นๆ. (2012) Potential determinants of the desire to enroll in the national health insurance fund among families in the informal sector in the northern state of Sudan. Chulalongkorn University:ม.ป.ท.Mohamed Mohammed Ahmed Elhassan Saeed และผู้แต่งคนอื่นๆ. 2012. Potential determinants of the desire to enroll in the national health insurance fund among families in the informal sector in the northern state of Sudan. ม.ป.ท.:Chulalongkorn University;Mohamed Mohammed Ahmed Elhassan Saeed และผู้แต่งคนอื่นๆ. Potential determinants of the desire to enroll in the national health insurance fund among families in the informal sector in the northern state of Sudan. ม.ป.ท.:Chulalongkorn University, 2012. Print.