The samples were originally submitted
and were examined retrospectively for hMPV and HCoV - NL63 by RT - PCR .
The samples were originally submitted to be tested for respiratory syncytial virus ( RSV ) , and were examined retrospectively for hMPV and HCoV - NL63 by RT - PCR .
The samples were originally submitted to be tested for respiratory syncytial virus ( RSV ) , and were examined retrospectively for hMPV and HCoV - NL63 by RT - PCR .