More than 300 doctors from about 20 provincial regions across China on Thursday left Beijing for Tibet, where they will offer free surgery to children with congenital heart disease and people with cataracts.

During their 10-day stay in Tibet, the doctors will visit Lhasa, Xigaze,Shannan, Nyingchi and Ngari, the United Front Work Department of the Communist Party of China (CPC) Central Committee, the organizer of the program, said in a statement.

A source with the department told Xinhua sponsors have invested "millions of dollars" to better facilitate the doctors and enrich the medical donations.

Aside from providing surgery, the medical specialists are expected to pair up with local doctors and offer them short-term training.

In an effort to help impoverished newborns with congenital heart disease to have access to medical services, the United Front Work Department of the CPC Central Committee has organized doctors to preform free operations on more than 100 children since 2008.

Most of these children were from China's hinterland regions of Sichuan, Ningxia and Inner Mongolia, according to a statement from the department.