PMC4973914
at
SoMeSci
http://data.gesis.org/somesci/PMC4973914
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https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4973914
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The survey forms were scanned using an optical character recognizing (OCR) machine and data were analyzed using STATA 10.1 for Windows (Stata Corp, College Station, TX, USA) software.
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