1. Cleft Lip and Palate Program, Yekatit 12 Hospital Medical College, Addis Ababa, Ethiopia
2. Faculty of Health Sciences, School of Medicine, AAU, Ethiopia
3. Yekatit 12 Hospital Medical College, Addis Ababa, Ethiopia
4. Department of Oral Pathology, Radiology and Medicine and Dows Institute for Dental Research at the College of Dentistry, University of Iowa, ML2198, 500 Newton Road, Iowa City, IA 52242, USA