1. Department of Pediatrics, College of Medicine, University of Ha’il, Ha’il 55473, Saudi Arabia
2. Department of Family and Community Medicine, College of Medicine, University of Ha’il, Ha’il 55473, Saudi Arabia
3. Department of Obstetrics and Gynecology, Maternity and Children Hospital, Ha’il 55471, Saudi Arabia
4. Department of Pharmacology, College of Medicine, University of Ha’il, Ha’il 55473, Saudi Arabia
5. Department of Medicine, College of Medicine, University of Ha’il, Ha’il 55473, Saudi Arabia
6. William Harvey Hospital, Ashford TN24 0LZ, UK