Gunnell, D.; Bennewith, O; Hawton, K; Simkin, S; Kapur, N (2005). “The epidemiology and prevention of suicide by hanging: A systematic review”. 《International Journal of Epidemiology》 34 (2): 433–42. doi:10.1093/ije/dyh398. PMID15659471.
Gunnell, D.; Bennewith, O; Hawton, K; Simkin, S; Kapur, N (2005). “The epidemiology and prevention of suicide by hanging: A systematic review”. 《International Journal of Epidemiology》 34 (2): 433–42. doi:10.1093/ije/dyh398. PMID15659471.