1. School of Information Sciences; University of Tennessee; Knoxville TN USA
2. Students Research Committee; Iran University of Medical Sciences; Tehran Iran
3. Department of Library and Medical Information Sciences; School of Health Management and Information Sciences; Iran University of Medical Sciences; Tehran Iran
4. Health Management and Economics Research Center; Iran University of Medical Sciences; Tehran Iran
5. Department of Biostatistics; Student Research Committee; Hormozgan University of Medical Sciences; Bandar Abbas Iran
6. Department of Biostatistics; School of Public Health; Iran University of Medical Sciences; Tehran Iran