1. Department of Family and Community Medicine, College of Medicine, King Khalid University, Abha, Saudi Arabia
2. Department of Ophthalmology, College of Medicine, King Khalid University, Abha, Saudi Arabia
3. Abha Maternity and Children Hospital, Abha, Saudi Arabia
4. Maternity and Children Hospital, Buraydah, Saudi Arabia
5. Al Amal and Mental Health Hospital in Jazan, Saudi Arabia
6. Department of Medicine, College of Medicine, King Khalid University Abha, Saudi Arabia.