Data sources Searches of electronic databases from inception until December 2013, checks of reference lists, manual searches of recent issues of relevant journals, and contact with experts.
ELECTRONIC CHECKING: Since eBay's inception, several companies have marketed a variety of electronic payment services.
A systematic search of electronic databases (Medline, CINAHL, EMBASE, PsycINFO) from inception to February 2012 was conducted to identify studies of AMD populations which measured symptoms of anxiety and/or depression.
Outcome data from DR screening examinations (digital retinal photography) were collected from the Scottish regional diabetes electronic record from inception of database to December 2012.
Reducing use of electronic devices.
The following medical electronic databases were searched between inception of the research to March 2011: Pubmed, Cinahl, Pedro, ProQuest, SCOPUS and PhysioFocus.
An electronic search was performed on The Cochrane Library, Medline and EMBASE (from inception of each database until June 2009).
Therefore, an electronic search strategy, using PubMed, EBSCO and Cochrane Library databases, was conducted from the inception of the studies into the databases to July 2016.
Studies were identified by electronic search of Medline (through PubMed), Embase, Web of Science, and Cochrane Review databases from inception of the each respective database through 31 October 2012, with prespecified English language and human-studies restrictions.
Data sources Electronic literature search without language restrictions of CINAHL, Embase, Medline, HealthSTAR, and the Cochrane Central Registry of Controlled Trials, from inception of the database to 10 September 2008.
