1 Inner Mongolia University for Nationalities, Tongliao, China.
2 Department of Gynecology, Affiliated Hospital of Inner Mongolia University for the Nationalities, Tongliao, China.
3 Department of Thoracic Surgery, Affiliated Hospital of Inner Mongolia University for the Nationalities, Tongliao, China.
4 Gastro-Endoscope Room, Inner Mongolia Xing'an League Branch Right Middle Banner Mongolian Medical Hospital, Horqin Right Wing Central Banner, Hohhot, China.
5 Department of Internal Medicine, Affiliated Hospital of Inner Mongolia University for the Nationalities, Tongliao, China - nmbrbt8989@yeah.net.