All

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 L01 Information Science D007254 +
  L01.700 Medical Informatics D008490 +
   L01.700.508 Medical Informatics Applications D008491 +
    L01.700.508.300 Information Systems D007256 +
     L01.700.508.300.680 Management Information Systems D008331 +
      L01.700.508.300.680.360 Hospital Information Systems D006751 +
       L01.700.508.300.680.360.500 Operating Room Information Systems D009870 
 N04 Health Services Administration D006298 +
  N04.452 Organization and Administration D009934 +
   N04.452.442 Hospital Administration D006739 +
    N04.452.442.452 Hospital Information Systems D006751 +
     N04.452.442.452.600 Operating Room Information Systems D009870 
 N04 Health Services Administration D006298 +
  N04.452 Organization and Administration D009934 +
   N04.452.515 Management Information Systems D008331 +
    N04.452.515.360 Hospital Information Systems D006751 +
     N04.452.515.360.555 Operating Room Information Systems D009870