About the Authors

Ching-Chieh Yang

Affiliations Department of Radiation Oncology, Chi-Mei Medical Center, Tainan, Taiwan, Institute of Biomedical Sciences, National Sun Yat-Sen University, Kaohsiung, Taiwan

Po-Chun Chen

Affiliation Department of Radiation Oncology, Pingtung Christian Hospital, Pingtung, Taiwan

Chia-Wen Hsu

Affiliation Department of Medical Research, Dalin Tzu Chi Hospital, Buddhist Tzu Chi Medical Foundation, Chiayi, Taiwan

Shih-Lun Chang

Affiliation Department of Otolaryngology, Chi-Mei Medical Center, Tainan, Taiwan

Ching-Chih Lee

hematcd2@hotamil.com

Affiliations Department of Otolaryngology, Dalin Tzu Chi Hospital, Buddhist Tzu Chi Medical Foundation, Chiayi, Taiwan, Center for Clinical Epidemiology and Biostatistics, Dalin Tzu Chi Hospital, Buddhist Tzu Chi Medical Foundation, Chiayi, Taiwan, Cancer Center, Dalin Tzu Chi Hospital, Buddhist Tzu Chi Medical Foundation, 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: CCY PCC CCL. Performed the experiments: CCY PCC CWH SLC CCL. Analyzed the data: CCY CWH CCL. Contributed reagents/materials/analysis tools: CCY CWH SLC CCL. Wrote the paper: CCY PCC CCL.