Approximately one child for every 1000 births (Central Europe). This rate varies according to populations.

Spina bifida and anencephaly are birth defects that occur in the first four weeks of pregnancy, before most women know that they are pregnant. Because about half of all pregnancies are unplanned, it is important to include 400 micrograms of folic acid in every childbearing age woman's diet. Spina bifida occurs when the lower end of the neural tube fails to close. Thus, the spinal cord and back bones do not develop properly. See similar questions...

It is still not known what causes anencephaly. It is probably triggered by a combination of genetic and environmental factors. We nevertheless know that taking Folic Acid can prevent anencephaly. Some medicines (the pill, valproic acid, antimetabolic drugs and others) lower Folic Acid levels, hence taking them increases the risk of giving birth to a child with anencephaly. See similar questions...

For some time now, the aetiology of Neural Tube Defects has cited diet and environmental factors. Clinical studies have confirmed that taking a vitamin called Folic Acid reduces the risk of developing a Neural Tube Defect. If all women of child-bearing age took 0.4 mgs of Folic Acid every day before conception and at least until the end of the first term of pregnancy, 50 to 70% of potential cases of anencephaly and Spina Bifida could be prevented. See similar questions...

experienced specialist using a high-resolution ultrasound scan can detect an anencephaly as early as the 10th week. In less-than-ideal circumstances, however, an anencephaly cannot be picked up or ruled out by an ultrasound scan until the 16th week of the pregnancy. AFP levels can be measured via a maternal serum screening test (blood test). If levels are high, there is a risk that the child may be suffering from an NTD. See similar questions...

While SpamBayes does an excellent job of classifying incoming mail, it is only as good as the data on which it was trained. Here are some tips to help you create a good training set: Don't use old mail. The characteristics of your email change over time, sometimes subtly, sometimes dramatically, so it's best to use very recent mail to train SpamBayes. See similar questions...

In contrast I know that certain Berkeley people work on the project weekends and near 24hrs a day to get things fixed when needed. There's two of them that effectively work shifts so that the systems are under a human eye for all but a few hours through the night... Unless you deeply understand server systems and how Boinc has been put together, there is a lot 'behind the scenes' that goes unnoticed. See similar questions...

A general answer to this question is that you should know as much as possible. Hormones are powerful drugs, and have potentially serious side effects. This is why it's such a good idea to work through an endocrinologist when starting on hormones; he will check your medical history and your general health, and will work with you to monitor your progress while maintaining your physical safety. I strongly recommend doing some background reading before you visit the doctor. See similar questions...

Broken bones (fractures) are often very painful. The only way we can really diagnose a fracture is by x-ray. See similar questions...

A:You may notice your skin is a bit more sensitive, especially during the winter, but there is little redness and no swelling, and most people return to normal daily activities immediately following a treatment session. See similar questions...

Even with all this evidence, it boggles the mind as to why many laws exist on the books to this day which mandate the use of bathing costumes; even laws which do not apply to nude recreation are being misapplied to innocent skinny dipping or sunbathing. See similar questions...