Comparison of Two Molecular Tests, Roche COBAS&amp;lt;sup&amp;gt;®&amp;lt;/sup&amp;gt;AmpliPrep/COBAS&amp;lt;sup&amp;gt;®&amp;lt;/sup&amp;gt;TaqMan&amp;lt;sup&amp;gt;®&amp;lt;/sup&amp;gt; and Abbott-RealTime in the HIV-1 Early Infants Diagnosis