General Aspects: General Conditions in the Severely Ill -- General Aspects: General Metabolic Effects and Treatments -- General Aspects: Assessment Protocols -- General Aspects: General Nutritional Aspects -- General Aspects: Specific Nutrients -- General Aspects: Adverse Aspects.- Enteral Aspects: General Aspects and Methods -- Enteral Aspects: Specific Nutrients.- Enteral Aspects: Specific Conditions -- Enteral Aspects: Adverse Aspects and Outcomes -- Enteral Aspects: Comparisons or Dual Parenteral and Enteral Support or Transitions -- Enteral Aspects: Preclinical Studies -- Parenteral Aspects: General Aspects and Methods -- Parenteral Aspects: Specific Nutrients -- Parenteral Aspects: Specific Conditions -- Parenteral Aspects: Adverse Aspects and Outcomes.- Parenteral Aspects: Comparisons or Dual Parenteral and Enteral Support or Transitions -- Parenteral Aspects: Preclinical Studies.