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© May 2005 Lorentz JÄNTSCHI && Sorana Daniela BOLBOACĂ

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 E01 Diagnosis D003933 +
  E01.370 Diagnostic Techniques and Procedures D019937 +
   E01.370.386 Diagnostic Techniques, Respiratory System D003948 +
    E01.370.386.700 Respiratory Function Tests D012129 +
     E01.370.386.700.650 Pulmonary Gas Exchange D011659 +
      E01.370.386.700.650.900 Ventilation-Perfusion Ratio D014692 


 G09 Circulatory and Respiratory Physiology D002943 +
  G09.772 Respiratory Physiology D012143 +
   G09.772.765 Respiratory Physiologic Phenomena D044702 +
    G09.772.765.920 Ventilation-Perfusion Ratio D014692