N. Joy Ugo and O. Grace Taiwo Olawale, “Fruit and Vegetable Consumption Pattern and Health Challenges of Elderly (≥60 Years) Staff in the University of Nigeria, Nsukka and Enugu Campuses: A Case Study”, Pak. J. Nutr., vol. 13, no. 11, pp. 626–630, Oct. 2014, doi: 10.3923/pjn.2014.626.630.