The data of the study were stored, organized and refined in a Microsoft Excel 2007 database; they were then transported and analyzed using the STATA version para Windows 10.0 program Stata Corp. LP, College Station, TX, USA.
Los datos del estudio fueron almacenados, organizados y depurados en una base de datos para Microsoft Excel 2007, luego fueron trasportados y analizados usando el programa STATA versión para Windows 10.0 Stata Corp. LP, College Station, TX, USA.