title: Challenges for palliative care research.
authors.affiliation: Program of Research on Serious Physical and Mental Illness, Geriatric Research, Education, and Clinical Center, Bronx VA Medical Center, Bronx, New York, New York, USA.
authors.forename: Joan D
authors.initials: JD
authors.lastname: Penrod
authors.forename: R Sean
authors.initials: RS
authors.lastname: Morrison
mesh_terms: D015984:Causality; D006801:Humans; D010166:Palliative Care / Q000379:methods*; D016032:Randomized Controlled Trials as Topic / Q000379:methods*; D012107:Research Design