chequearon
Preterite ellos/ellas/ustedes conjugation of chequear.

chequear

También se verificó que solamente en tres trabajos de revisión (2,5%) se chequearon si los estudios revisados sortearon el control de comités de ética.
It was also found that in only three review articles (2.5%) had the reviewed studies been approved by ethics committees.
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to light