human 29 Quality control 25 quality control 22 Quality assurance 20 Article 18 controlled study 17 Humans 16 article 13 female 13 adult 12 male 10 Female 7 Machine learning 6 Adult 5 Male 5 Water quality 5 major clinical study 5 Middle Aged 4 aged 4 clinical article 4 health care quality 4 machine learning 4 middle aged 4 patient care 4 standardization 4 Aged 3 China 3 Land use 3 Radiotherapy, Intensity-Modulated 3 Regression analysis 3