Patients with a life expectancy of less than one year Life expectancy >= 12 weeks PROCUREMENT: Patients with life expectancy >= 6 weeks TREATMENT: Patients with life expectancy >= 6 weeks Participants must have an estimated life expectancy of > 6 weeks Patients must have a life expectancy of at least 6 weeks Life expectancy >= 12 weeks Patients must have a life expectancy of >= 8 weeks Patients must have a life expectancy >= 12 weeks Patients must have a life expectancy of at least 8 weeks Participants must have a life expectancy of 2 years or more Life expectancy must be estimated by patient�s physician at > 6 months Patients must have a life expectancy of >= 12 weeks as determined clinically by the treating physician No comorbid conditions that would cause life expectancy of less than 5 years Life expectancy > 12 weeks Patients must have a life expectancy of >= 8 weeks Must have a life expectancy of at least 12 weeks