Funding for this research was provided by:
Ministry of Science and Technology, Taiwan (NSC 100-2314-B-320-002-MY3, MOST 104-2314-B-002-222-, 105-2314-B-002-065, and MOST 106-2314-B-002-107)
Occupational Safety and Health Administration of Labor (project no. 05-10101011, 05-10201025 and 05-10301016)