#registered_nurse__RN  a graduate nurse who has passed examinations for registration
  supertype:  #nurse  one skilled in caring for the sick (usually under the supervision of a physician)
  subtype:  #nurse-midwife__nursemidwife  a registered nurse who has received special training as a midwife
  subtype:  #nurse_practitioner__nursepractitioner__NP__nurse_clinician__nurseclinician  a registered nurse who has received special training and can perform many of the duties of a physician

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