The databases were searched without language restriction or publication year limits (ie, from the start of the databases).
The search was performed from the start of the databases until 14 February 2014.
Papers were included from the start of the databases until January 2014.
The authors examined data from the start of the literature databases 'Pubmed', 'Psychinfo' and 'Cochrane CENTRAL' to June 2005 [ 20].
Little effect data from standard plant tests were available for tylosin tartrate and florfenicol at the start of the present study (ECOTOX database [19]).
In this study we used the reoperation database, which includes personal ID numbers from the start of the Register in 1979.
18 Records of diagnoses of selected comorbidities, including depression, anxiety and asthma, occurring prior to the start of the study were retrieved from the database.
Source: database prospectively updated since the start of the Unit.
The publication time is from the start of each database up to July of 2012.
The publication time was from the start of each database up to February 2014.
Medline, EMbase, PsycInfo, the Cochrane library and databases, BDSP, CRD and NGC were searched from the start of their databases to June 2013.
