Pinto, E., Severo, M., Correia, S., Dos Santos Silva, I., Lopes, C., & Barros, H. (2009). Validity and reproducibility of a semi‐quantitative food frequency questionnaire for use among Portuguese pregnant women. Matern Child Nutr.

Pinto, Elisabete, Milton Severo, Sofia Correia, Isabel Dos Santos Silva, Carla Lopes, et Henrique Barros. "Validity and Reproducibility of a Semi‐quantitative Food Frequency Questionnaire for Use Among Portuguese Pregnant Women." Matern Child Nutr 2009.

Pinto, Elisabete, et al. "Validity and Reproducibility of a Semi‐quantitative Food Frequency Questionnaire for Use Among Portuguese Pregnant Women." Matern Child Nutr 2009.