1. Department of Health Information and Statistics; Ministry of Health; Al-Nahdha Hospital; Muscat Oman
2. Oncology Unit; Department of Medicine; College of Medicine and Health Sciences; Sultan Qaboos University; Muscat Oman
3. The National Oncology Center; The Royal Hospital; Muscat Oman
4. Department of Family Medicine and Public Health; College of Medicine and Health Sciences; Sultan Qaboos University; Muscat Oman