MTCT definitions

MTCT

Previous version was copyvio from http://www.hawaii.edu/hivandaids/Is%20Mother%20to%20Child%20HIV%20Transmission%20Preventable.pdf ...
Found on http://en.wikipedia.org/wiki/MTCT

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MTCT

Mother-to-child transmission of HIV.
Found on https://www.ncbi.nlm.nih.gov/books/NBK326680/

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