Morphine Terminated Phase N/A Trials for Chronic Myeloproliferative Disorders / Myelodysplastic Syndromes / Precancerous Conditions / Unspecified Adult Solid Tumor, Protocol Specific / Myelodysplastic/Myeloproliferative Neoplasms / Brain and Central Nervous System Tumors / Leukemias / Multiple Myeloma and Plasma Cell Neoplasm / Pain / Lymphoproliferative Disorders / Malignant Lymphomas Supportive Care