| http://www.w3.org/ns/prov#value | - Sleep disturbances occur in about 10% to 15% of the general population [1] and are often associated with situational stress, illness, aging, and drug treatment.[2] It is estimated that one-third to one-half of people with cancer experience sleep disturbance.[3,4] Physical illness, pain, hospitalization, drugs and other treatments for cancer, and the psychological impact of a malignant disease may
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