1. Division of Hematology‐Oncology Department of Internal Medicine Chi Mei Medical Center, Liouying Tainan Taiwan
2. Department of Senior Welfare and Services Southern Taiwan University of Science and Technology Tainan Taiwan
3. Department of Environmental and Occupational Health College of Medicine National Cheng Kung University Tainan Taiwan
4. Department of Medical Research Chi Mei Medical Center, Liouying Tainan Taiwan
5. Department of Occupational Medicine Chi‐Mei Medical Center Tainan Taiwan
6. Department of Occupational and Environmental Medicine National Cheng Kung University Hospital Tainan Taiwan