A staff member is seen at the Genomic Medicine Institute Center for Personalized Genetic Healthcare of Cleveland Clinic in Cleveland, Ohio, Aug. 22, 2018. Covering 170 acres of land in downtown Cleveland, the U.S. state of Ohio, the clinic is one of the top medical centers in the country. Particularly famous for the treatment of cardiovascular disease, it recorded 7.6 million patient visits in 2017. (Xinhua/Wang Ying)