1. Although there may be a duty to provide life-sustaining machinery in the immediate aftermath of a cardiorespiratory arrest, there is no duty to continue its use once it has become futile in the opinion of qualified medical personnel;A physician has no duty to continue treatment, once it has proved to be ineffective,1983
2. The obligation to provide antiretroviral treatment in HIV prevention trials
3. Medical Futility: The Duty Not to Treat