| fda.gov | Food and Drug Administration |
| esicm.org | Esicm |
| usda.gov | Nutrient Data Laboratory Food Composition Data |
| efad.org | European Federation of the Association of Dietitians (EFAD) |
| saspen.com | South African Society for Parenteral and Enteral Nutrition (SASPEN) |
| pensa.org | The Parenteral and Enteral Nutrition Society of Asia (PENSA) |
| nutrition.org | The American Society for Clinical Nutrition |
| faseb.org | The American Society for Clinical Nutrition |
| eatright.org | American Dietetic Association |
| clinnutr.org | The American Society for Parenteral and Enteral Nutrition |
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