Nita, et al. “Is Ratio of Omega-3 Omega-6 Fatty Acids Intake Related With the Level of Omega-3 in the Membrane of Erythrocyte Among Institutionalized Elderly?”. Pakistan Journal of Nutrition, vol. 19, no. 8, July 2020, pp. 388–392, https://doi.org/10.3923/pjn.2020.388.392.