PMC:6707402 / 3964-4200 JSONTXT

{"target":"http://pubannotation.org/docs/sourcedb/PMC/sourceid/6707402","sourcedb":"PMC","sourceid":"6707402","source_url":"https://www.ncbi.nlm.nih.gov/pmc/6707402","text":"The search was performed in PubMed (1966-present), EMBASE (1980-present), and the Cochrane Library. The databases were last searched on February 23, 2018. Our search strategy was formulated with the help of a medical research librarian.","tracks":[]}