Key points are not available for this paper at this time.
1Pain Therapy and Palliative Care Division, National Cancer Institute of Milan, MilanItaly ∗Correspondence to: Dr. Vittorio Ventafridda, Pain Therapy and Palliative Care Division, National Cancer Institute of Milan, Via Venezian 1, 20133 Milan, Italy. Submitted November 27, 1990; accepted December 14, 1990.
Ventafridda et al. (Mon,) studied this question.
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