“…The incidence of fall-related injuries is characterized by the seasonal variation in different geographic regions, including countries with cold climate (Canada, Sweden, Finland, and Norway) [ 3 , 13 , 17 , 18 ] and countries with warm and subtropical climate (Taiwan, Spain, Iran, and Hong Kong) [ 19 , 20 , 21 , 22 ]. Winter-related environmental conditions (low air temperature, snowfalls, and darkness) can cause slipperiness and increased dangerousness of sidewalks and streets [ 23 , 24 ]. Exposure to slippery ground surfaces, such as those covered with ice, melting ice, snow-covered ice, melting snow, and compressed snow is a common attribute of winter-time falls [ 16 , 23 , 24 , 25 ].…”