Knowledge human 62 Humans 51 female 42 knowledge 39 male 36 adult 35 article 28 Attitude 27 Female 23 questionnaire 22 Adult 21 cross-sectional study 20 Male 19 attitude to health 18 human experiment 17 Health Knowledge, Attitudes, Practice 16 child 16 Cross-Sectional Studies 15 Malaysia 15 Child 14 Surveys and Questionnaires 14 Practice 13 Article 12 Young Adult 12 major clinical study 11 perception 11 psychology 11 Learning 10 learning 10