2.3  |  Search methods
Computerized searches were performed on four English databases (PubMed, Embase, The Cochrane Library, Web of Science) and three Chinese databases (CNKI, Wanfang Data Knowledge Service Platform, and Wipu Chinese scientific and technical journal databases). The search time limit was from the establishment of the library to August 1, 2023, and relevant references and secondary literature were manually searched. A combination of subject terms and free words was used. English search terms included ””breast neoplasms, breast cancer, breast tumor, mammary neoplasm, mammary carcinoma, breast neoplasm, breast carcinoma breast malignan*, breast metastas*, mammary malignan*, mammary metastas*, Virtual Reality Exposure Therapy, virtual real*, VR, virtual-real*. virtual reality therap*, video gam*, computer gam*, gaming consol*, interactive gam*, Xbox, Playstation, nintendo, virtual environment*, virtual object*, virtual world*, virtual treatment*, virtual system*, virtual program*, virtual rehabilitation*, virtual therap*”; Chinese search terms include ”virtual reality, virtual reality technology, virtual environment, virtual game, distraction, VR technology, interactive emotional simulation, virtual situation, breast cancer, breast tumor, breast cancer, breast cancer disease, breast tumor”.