%0 Journal Article %T A Follow-Up of the Multicenter Collaborative Study on HIV-1 Drug Resistance and Tropism Testing Using 454 Ultra Deep Pyrosequencing %A 454 HIV-1 Alpha Study Group %A Alexander Thielen %A Birgitte B. Simen %A Christian Gabriel %A Elizabeth P. St. John %A Francesca Di Giallonardo %A Gregory S. Turenchalk %A Gudrun G. Schmitz-Agheguian %A Isabella Abbate %A Jacques Izopet %A James Sakwa %A Jeroen Aerssens %A Karin J. Metzner %A Karolin Meixenberger %A Martin P. D£żumer %A Martin Victor %A Michael S. Braverman %A Olivier Bouchez %A Ralph Schlapbach %A Roger Paredes %J Archive of "PLoS ONE". %D 2016 %R 10.1371/journal.pone.0146687 %U https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4710461/