“…Study subjects are often derived from hospital-based case series or limited to urban populations selected exclusively from large cities, particularly the capital cities (Kuwait, Morocco, Oman, Saudi Arabia, and Iran) [11,[42][43][44][45]. Findings from these studies show that crude incidence rates among those aged 50 years and over are lowest in Morocco (52.1 and 43.7 per 100,000 in females and males, respectively) [42] and highest in Kuwait (295/100,000 in females and 200/100,000 in males) [11]. In Saudi Arabia, the incidence rates for individuals older than 40 years of age were 100/100,000 in females and 71/100,000 in males [44], and in Oman 150/100,000 and 130/100,000, respectively [43].…”