All

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 N03 Health Care Economics and Organizations D004472 +
  N03.349 Health Planning D006285 +
   N03.349.380 Health Services Research D006302 +
     N03.349.380.420 Health Services Needs and Demand D006301 
     N03.349.380.210 Health Care Surveys D019538 
     N03.349.380.710 Organizational Case Studies D019982 
     N03.349.380.565 Needs Assessment D020380 
 N05 Health Care Quality, Access, and Evaluation D017530 +
  N05.425 Health Services Research D006302 +
    N05.425.210 Health Care Surveys D019538