Conventional Western Treatment Associated With Chinese Herbal Medicine Ameliorates the Incidence of Head and Neck Cancer Among Patients With Esophageal Cancer oleh Chia-Chen Chang MD, Kuo-Wei Bi MD, Hung-Jen Lin MD, PhD, Yuan-Chih Su MSc, Wen-Ling Wang MD, PhD, Chen-Yuan Lin MD, PhD, Chun-Fu Ting MD, Mao-Feng Sun MD, PhD, Sheng-Teng Huang MD, PhD