“…it was observed that most of the studies were conducted in Europe with a total of 15 (62.5%), out of which 5 ([35, 36, 44, 51, 52]) were proposed in the Netherlands, followed by Norway with 2 related studies ( [31,39]), and finally Germany, Austria, Spain, Finland, Italy, Lithuania, Portugal, and Sweden with 1 study each, for a total of 8 related studies ( [32,33,34,41,42,47,49,53]). On the other hand, (i) 3 studies were conducted in Africa (12.5%), out of which 2 were conducted in South Africa ( [40,45]) and 1 in Saudi Arabia ( [37]); (ii) 3 related studies (12.5%) were identified in South America, out of which 2 were proposed in Colombia ( [38,43]) and 1 in Brazil ( [50]); (iii) 2 related studies were identified in Asia (8.3%), and they were proposed by authors located in the geographical area of Turkey, which belongs to the Asian continent ( [46,48]); and (iv) 1 related study was carried out in North America, specifically in the United States (4.2 %) ( [54]).…”