“Validation Data Based on a Web-Based Photographic Questionnaire for Assessment of Skills in Estimating Carbohydrate Portion Sizes in Adults With Type 1 Diabetes”. Journal of Clinical Nutrition and Food Science 2, no. 2 (May 16, 2019). Accessed October 31, 2026. https://somatopub.com/index.php/JCNFS/article/view/268.