“…It is also a leading cause of suicide deaths in Taiwan, Hong Kong, and other Asian countries where suicide by charcoal burning has increased rapidly (Pan et al, 2010;Tsai et al, 2011). The clinical symptoms of CO poisoning are non-specific and varied, including cognitive dysfunctions, personality changes, urine and fecal incontinence, gait disturbances, parkinsonism and other movement problems, depression, anxiety and mutism (Ernst and Zibrak, 1998;Hurley et al, 2001;Kesler et al, 2001;Hay et al, 2002;Parkinson et al, 2002;Porter et al, 2002;Weaver et al, 2002;Pulsipher et al, 2006;Kondziella et al, 2009;Weaver, 2009;Chang et al, 2010;Ku et al, 2010;Yang et al, 2011).…”