After introducing several feature candidates out of six groups (power, pitch, modulation, etc)., a performance comparison using large databases was performed.
A search of the PubMed and Medline databases was performed.
A systematic literature search using several databases was performed.
An analysis of existing theoretical frameworks and review papers in databases was performed.
A literature search of several databases was performed to identify studies providing individual patient data.
A systemic literature search in the PubMed databases was performed to identify all publications related to LESS adrenalectomy.
A search of the main electronic databases was performed in addition to a hand search of the most relevant journals.
A computerized search using the PubMed Central, ScienceDirect, Wiley Online, Ovid, and Cochrane Library databases was performed following the PRISMA guidelines.
A search of PubMed, Embase, Scopus and the Cochrane Library databases was performed by combining the terms 'statins', 'infection', 'sepsis', 'bacteraemia', 'pneumonia', and 'ICU infections'.
A comprehensive search of 7 databases was performed to evaluate efficacy of antiviral prophylaxis against HBVr in allo-HSCT patients (PubMed/Medline, Embase, Scopus, Cochrane Library, Web of Science, CINAHL, and ClinicalTrials.gov (June 21 , 2017).
A systematic search of the following databases was performed: MEDLINE, EMBASE, Zetoc database of conference proceedings, the Cochrane Database of Systematic Reviews, and the ClinicalTrials.gov website, up to July 28 , 2011
