HIGHLIGHTS
- who: Ni Yan from the dietary intakes of this high-risk population in Ningxia, China have published the paper: Validity and reliability of a semi-quantitative food frequency questionnaire in groups at high risk for cardiovascular diseases, in the Journal: Nutrients
- what: The authors aim to evaluate the validity and reliability of the semi-quantitative food frequency questionnaire (SFFQ) in the groups in Ningxia using a 24-hour dietary recall method. The main reasons for not participating in the study included refusal, absence during the investigation period, poor health and death. It had to be . . .
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