This system has been previously validated as mortality predictor.
They answered a questionnaire which was previously validated.
To collect data it was used a dilemmas questionnaire, previously validated.
A selective design, through a questionnaire previously validated by experts, was used.
Neutralizers used must have been previously validated by a validation test.
Because, with zenon you can collect data without having to intervene in previously validated equipment.
Individual medical records were revised and applied a previously validated.
We generate additional sales to customers previously validated by you.
For parents, a previously validated survey was used.
We used a previously validated questionnaire with closed questions.
Se utilizó un cuestionario de preguntas cerradas previamente validado.
The information obtained from a previously validated survey.
The instruments used were structured and previously validated.
The data were collected through a questionnaire previously validated to students.
La recogida de datos se realizó mediante un cuestionario que se pasó al alumnado, validado previamente.