title: JPEN Journal Club 7. Subgroup analyses.
authors.affiliation: Olive View-UCLA Medical Center, David Geffen-UCLA School of Medicine, Sylmar and Los Angeles, California rkoretz@msn.com.
authors.forename: Ronald L
authors.initials: RL
authors.lastname: Koretz
mesh_terms: D006801:Humans; D010288:Parenteral Nutrition; D011182:Postoperative Care; D012107:Research Design