There are many external factors, including alcohol, drugs, smoke, high temperatures, radiation exposure, and high altitudes that can pose a serious threat to a developing fetus. Listed in the directory below you will find information that covers some potential hazards. If you cannot find the information in which you are interested, please visit the Pregnancy & Childbirth Online Resources page in this Web site for an Internet/World Wide Web address that may contain additional information on that topic.

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