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 E01 Diagnosis D003933 +
  E01.370 Diagnostic Techniques and Procedures D019937 +
   E01.370.380 Diagnostic Techniques, Ophthalmological D003941 +
    E01.370.380.850 Vision Tests D014787 +
     E01.370.380.850.900 Vision Screening D015351 

 E05 Investigative Techniques D008919 +
  E05.318 Epidemiologic Methods D004812 +
   E05.318.308 Data Collection D003625 +
    E05.318.308.250 Health Surveys D006306 +
     E05.318.308.250.580 Mass Screening D008403 +
      E05.318.308.250.580.925 Vision Screening D015351 

 G03 Environment and Public Health D004778 +
  G03.850 Public Health D011634 +
   G03.850.520 Epidemiologic Methods D004812 +
    G03.850.520.308 Data Collection D003625 +
     G03.850.520.308.250 Health Surveys D006306 +
      G03.850.520.308.250.580 Mass Screening D008403 +
       G03.850.520.308.250.580.925 Vision Screening D015351 

 G03 Environment and Public Health D004778 +
  G03.850 Public Health D011634 +
   G03.850.780 Public Health Practice D015980 +
    G03.850.780.500 Mass Screening D008403 +
     G03.850.780.500.950 Vision Screening D015351 

 N05 Health Care Quality, Access, and Evaluation D017530 +
  N05.715 Quality of Health Care D011787 +
   N05.715.360 Health Care Evaluation Mechanisms D017531 +
    N05.715.360.300 Data Collection D003625 +
     N05.715.360.300.375 Health Surveys D006306 +
      N05.715.360.300.375.500 Mass Screening D008403 +
       N05.715.360.300.375.500.825 Vision Screening D015351