“…Among them, two presented data from various countries (Spain, Italy, Brazil, Colombia, and Chile) [13,14], three referred to the US in general [15][16][17] and one included hot spots of New York, New Jersey, Massachusetts, Maryland, Alabama, Colorado, Connecticut, Pennsylvania, Michigan, Louisiana, Georgia, Illinois, Indiana and District of Columbia [18]. Six were performed in European countries; namely, two retrieved data from Italy [19,20], two from Spain [21,22], one from France [23] and one from Poland [24]; two studies were conducted in China [25,26], and one in Palestine [27]. Most of them (n = 8) were cross-sectional, and the other seven were cohort studies, while the majority were conducted in reference to the COVID-19 lockdown (n = 9), and some referred to the COVID-19 pandemic (n = 6) (Table 1).…”