“…Fifteen studies were conducted in European populations, 3,4,6,8,11,12,15,17,18,20,[25][26][27]31 thirteen from Asia, 2,7,14,19,[21][22][23][24]32,33 five from South America, 1,16,28,30,35 two from North America, 5,29 one from Africa 39 and three studies do not mention the country. 9,10,40 The age range varied from 0 to 49 years old, and the studies addressed a wide 1,3,5,6,12,15,17,[26][27][28][29]35 or a narrow 4,7,8,11,14,16,…”