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| | Types of ED |
 | | It is a group of heritable disorders causing the hair, teeth, nails and glands to develop and function abnormally. |
 | | An incidental congenital heart defect in a child with Christ-Siemens-Touraine syndrome, for instance, may steer the doctor away from the correct diagnosis unless proper consideration is given to the possibility that the two conditions coexist by coincidence. |
 | | Fourth, the medical literature may be biased and may describe only severely affected individuals or those with unusual findings; as a result, individuals with mild features of a known ED may escape notice or may not be diagnosed promptly. |
| www.nfed.org /TypesofED.htm (427 words) |
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