据美国联邦公报14日消息，11月14日美国FDA再次就疗效食品常见问答指南草案征求意见，征求意见截止2013年12月16日。
    部分原文报道如下：
    The Food and Drug Administration （FDA or we） is reopening the comment period for the draft guidance for industry entitled "Frequently Asked Questions About Medical Foods; Second Edition." We are reopening the comment period in response to requests for an extension to allow interested persons additional time to submit comments.
    原文链接：https://www.federalregister.gov/articles/2013/11/14/2013-27213/draft-guidance-for-industry-on-frequently-asked-questions-about-medical-foods-second-edition