I can't find it online, but it is archived in the hospital archives. You can go to the Twelfth People's Hospital of Chongqing to apply for employee health certificate. As long as the health certificate has not expired, it is generally applicable in any district.
Address: No.55 Jinyuan Road, Jiangbei District. Guanyin Bridge, near Carrefour. Opposite oriental home. Bus No.863, 630, 825, 835, 6 17, 6 15 get off at oriental home Station.