Morphine Completed Phase 3 Trials for Chronic Myeloproliferative Disorders / Myelodysplastic Syndromes / Unspecified Adult Solid Tumor, Protocol Specific / Precancerous/Nonmalignant Condition / Multiple Myeloma and Plasma Cell Neoplasm / Leukemias / Small Intestine Cancer / Pain / Malignant Lymphomas Supportive Care