1. School of Public Health, Shandong University, Jinan, Shandong Province 250012, China (875397037@qq.com; dlzhl@sdu.edu.cn; miao1206@126.com; xifengs@163.com; sunyue1018@163.com; zcmsdu@163.com; 490161337@qq.com; 772321342@qq.com; 15953166632@163.com; xuyu@utmb.edu)
2. Huangdao District Center for Disease Control and Prevention, Qingdao City, Shandong Province, China (JNJKZZT@163.com; zaifengxue@126.com; mdq63@163.com)
3. Fudan University, School of Medicine, Shanghai, China (howardyu89@163.com)
4. Department of Pathology, University of Texas Medical Branch at Galveston, TX 77555-0609,