About the Authors

Ting-Shou Chang

Affiliation Department of Otolaryngology, Kaohsiung Veterans General Hospital, Kaohsiung, Taiwan

Chun-Ming Chang

Affiliation Department of Surgery, Buddhist Dalin Tzu Chi General Hospital, Chiayi, Taiwan

Hsu-Chieh Ho

Affiliations Department of Otolaryngology, Buddhist Dalin Tzu Chi General Hospital, Chiayi, Taiwan, School of Medicine, Tzu Chi University, Hualian, Taiwan

Yu-Chieh Su

Affiliations Department of Internal Medicine, Buddhist Dalin Tzu Chi General Hospital, Chiayi, Taiwan, School of Medicine, Tzu Chi University, Hualian, Taiwan

Li-Fu Chen

Affiliation Department of emergency, National Yang-Ming University Hospital, Taipei, Taiwan

Pesus Chou

Affiliation Community Medicine Research Center and Institute of Public Health, National Yang-Ming University, Taipei, Taiwan

Ching-Chih Lee

hematcd@hotmail.com

Affiliations Community Medicine Research Center and Institute of Public Health, National Yang-Ming University, Taipei, Taiwan, Department of Otolaryngology, Buddhist Dalin Tzu Chi General Hospital, Chiayi, Taiwan, School of Medicine, Tzu Chi University, Hualian, Taiwan

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: TSC CMC CCL. Analyzed the data: CCL PC. Wrote the manuscript: TSC CMC HCH YCS LFC PC CCL.