1. Medical Library and Information Sciences, School of Health Management and Medical Information Science , Iran University of Medical Sciences , Tehran , Iran
2. Department of Medical Library and Information Sciences, School of Health Management and Medical Information Science , Iran University of Medical Sciences , Tehran , Iran
3. Health Management and Economics Research Center, Health Management Research Institute, Iran University of Medical Sciences , Tehran , Iran
4. Health Management and Economics Research Center , Health Management Research Institute, Iran University of Medical Sciences , Tehran , Iran
5. Department of Information Science & Knowledge Studies , Shahed University , Tehran , Iran
6. Department of Pharmaceutical Health Services Research , University of Maryland School of Pharmacy , Baltimore , Maryland , USA