Validation of Self-administered Questionnaire for Assessing Calcium Intake in Patients With Multiple Sclerosis or Chronic Inflammatory Arthritis

All patients will fill out the QALCIMUM questionnaire.

"All patients will have an interview with a dietician who performs a food survey serving as a reference (gold standard) and based on data from CIQUAL \*.~\* CIQUAL Data: Nutritional food composition table available on the website of the ANSES (National Agency for Sanitary Security of Food, Environment and Labour), published by the Observatory of the Nutritional Quality of Foods. This table includes 1500 sheets of 58 nutritional components. The data is integrated into the software (DATAMEAL) for calculating the ingesta parameters at the Nîmes University Hospital."