All of the participants in these analyses were white, because there are few well-validated genetic studies in black populations.
这些研究中的所有参与者都是白人，因为在黑人人群中罕有确定有效的遗传研究。
2
The study, published in The American Journal of Clinical Nutrition, has significant strengths in its prospective design, large sample and use of a well-validated dietary questionnaire.
这项研究发表于《美国临床营养学杂志》(the American Journal of Clinical Nutrition)。 该研究因实验安排可操作、实验参与对象数量多并使用经充分验证过的饮食问卷调查而具有显著优势。
3
All patients rated their own symptoms and how well they were functioning, which were translated into scientifically validated scores.