Certification requires the completion of several skills to be performed during three open water dives as well as the completion of a Knowledge Review following a Knowledge Presentation and Discussion session. (aqua-vision.net)
Certification requires the completion of several skills to be performed during four open water dives as well as the completion of a Knowledge Review following a Knowledge Presentation and Discussion session. (aqua-vision.net)
The number of cases has decreased following knowledge of the role of folate in birth defects and the FDA's requirement to put folic acid into enriched grain products. (sciencenews.org)