A-HIT2, is also designed as a National FH registry. At least 1000 FH patients will be recruited from 30 outpatient clinics representing the 12 Nuts statistical Regions in Turkey proportional to the 2015 Turkey's Population distribution.[14] Both HeFH and HoFH patients are eligible for enrollment. Sites specialized on cardiology, internal medicine, and endocrinology were invited by the Turkish Society of Cardiology.