human 344 Humans 257 female 224 male 218 Article 173 adult 173 controlled study 148 Female 122 Male 114 major clinical study 95 primary health care 89 article 88 middle aged 83 primary medical care 83 Primary Health Care 75 Adult 67 aged 67 child 65 Middle Aged 62 clinical article 62 procedures 55 Child 47 questionnaire 47 diagnostic imaging 46 Primary care 44 Ecosystems 42 nuclear magnetic resonance imaging 41 primary motor cortex 41 cross-sectional study 40 human experiment 40