To our knowledge, only a recent population-based prospective study conducted in Italy investigated the issue.

就我们所知，意大利只是最近有一个基于人群的前瞻性研究涉及这个问题。

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The Singapore Chinese Health Study, funded by the U. S. National Institutes of Health, National Cancer Institute, is a population-based prospective study initiated between 1993 and 1998.

新加坡华人健康研究是由美国国立健康协会及国立肿瘤协会赞助的，是在1993年至1998年间一项基于人群的前瞻性研究。

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Dietary patterns associated with fall-related fracture in elderly Japanese: a population based prospective study.

FORBES: Chinese Medicine Infiltrates Scientific Publishing