Wang Chen, center, vice-president of the Chinese Academy of Engineering and director of the Center for Respiratory Diseases of the China-Japan Friendship Hospital, visits Yi Fan at an ICU ward at Tongji Hospital in Wuhan, Central China's Hubei province, on March 25, 2020. Yi Fan and Hu Weifeng are two doctors from the Central Hospital of Wuhan who were infected with novel coronavirus pneumonia back in January. Both were in critical condition and later transferred to Tongji Hospital, where they were treated by a medical team from Beijing's China-Japan Friendship Hospital. Both patients are now out of danger and are in recovery, the hospital said on Monday.