“…The main etiology reported was anxiety (17,24,34,45,48,49,53,64,67,68,70,71,75,77,93,94,98,106,124,137,143–148), alternatively referred to as stress (4,22,47,71,75,84,102,149), or emotional distress (26,28,30,34,48,54,95,100,102,150–152). Underlying causes of anxiety were depression (24,75,113) and fear of a specific object or situation (48,104,118,153).…”