“…The PSS has been translated into many languages and the reliability and validity have been verified in different countries. For instance, PSS-14 has been evaluated in Sweden [9], France [10], Greece [11], Mexico [12], America [13] and Japan [14]; PSS-10 has been evaluated in Sweden [15], France [10], Korea [16], Mexico [12], America [13], Arabia [17], Serbia [18], Germany [19], Vietnam [20], Brazil [21] and Thailand [22]; PSS-4 has been evaluated in France [10], Korea [16], Mexico [12] and America [13]. In China, a few studies have verified the PSS in specific population, such as policewomen (PSS-10) [23], university students (PSS-10) [24], elderly service workers (PSS-10) [25] and cardiac patients who smoke (PSS-14, 10 and 4) [26].…”