About the Authors

Chin-Hsiao Tseng

ccktsh@ms6.hinet.net

Affiliations Department of Internal Medicine, National Taiwan University College of Medicine, Taipei, Taiwan, Division of Endocrinology and Metabolism, Department of Internal Medicine, National Taiwan University Hospital, Taipei, Taiwan, Division of Environmental Health and Occupational Medicine of the National Health Research Institutes, Taipei, Taiwan

Competing Interests

The author has declared that no competing interests exist.

Author Contributions

Wrote the paper: CH. Other (please specify): Researched Data: CH.