sources for a patient. Some of the commonly
    maintained lists include:
  </p>
  <ul>
    <li>Current Problem List: a list of the problems that are of concern for care of the patient</li>
    <li>Current Medication List: a list of the medications that a patient is known to be on at the current time</li>
  </ul>
  <p>
    Because of the way that resources are used, there is no simple way to determine, from
    examination of a resource, whether it is 'current' or not. Take, as an example, the
   