| sfvb.org | French Society for Vitamins and Biofactors |
| niacmd.net | National Information and Advice Centre for Metabolic Diseases |
| usda.gov | Food and Nutrition Information Center |
| mdda-australia.org | Metabolic Dietary Disorders Association |
| iuns.org | International Union of Nutritional Sciences |
| jwlsite.com | James William Lazzaro Foundation |
| ufl.edu | National Food Safety Database |
| nih.gov | NIDDK : Weight-Control Information Network |
| martinezfoundation.org | Manuela Martinez Foundation for Children with Metabolic Diseases |
| rarediseases.org | National Organization for Rare Disorders, Inc. |
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