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The run-in period was either started at the start of the database or at the time of first immigration into Fyn of the subject, if the subject immigrated into Fyn during the observation period.
At the start of the database in 1987, family physicians contributing to the GPRD used a modified version of the Oxford Medical Information Systems coding system (OXMIS) to record diagnoses, but in recent years the Read coding system was used by all family practices.
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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 databases were searched without language restriction or publication year limits (ie, from the start of the databases).
Ethics approval was obtained from the Canton of Zürich ethics commission prior to the start of the databases (EK-12/2009, EK-16/2009, EK-19/2009, EK-22/2009) and all patients signed informed consent immediately prior to their therapeutic intervention.
Searches, using the strategy listed in online supplementary appendix 1, will start from the start date of the database through to September 2015.
The Cresc team went back all the way to the start of the electronic database in 2004, and found that year after year the pre-tax return on capital employed was never less than 100%.
The GVL was introduced into our ICU prior to the start of the CQI database and is the primary video laryngoscope located on multiple ICU wards where medical ICU patients may overflow.
The starting point of the database was the availability of an OI study, either hepatic or renal, in the DIDB.
The authors examined data from the start of the literature databases 'Pubmed', 'Psychinfo' and 'Cochrane CENTRAL' to June 2005 [ 20].
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