https://www.selleckchem.com/pr....oducts/Cryptotanshin
To evaluate the validity and reliability of the Child Perceptions Questionnaire 11-14 (CPQ11-14) for children attending public educational institutions in Floridablanca (Colombia). An evaluation study of diagnostic technology was conducted. The questionnaire was completed by 500 students aged 11-14years who were selected by simple random sampling. The test-retest reproducibility was evaluated in 36 students chosen at random from one of the schools; the questionnaire was completed a second time by these students, with an interva
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