They filled out dietary questionnaires early in the study, during treatment, and a year later. (liveinthenow.com)
For example, participants only filled out dietary questionnaires once every two to four years. (articles.mercola.com)
«We included a subset of 78,980 women and 41,221 men who were 40 years or older, free of glaucoma, had completed dietary questionnaires, and reported an eye examination during follow - up,» said lead author Jae H. Kang, Sc.D., Channing Division of Network Medicine, Department of Medicine, BWH / HMS. (sciencedaily.com)