Simplification to Single Tablet Regimen of Elvitegravir, Cobicistat, Emtricitabine, Tenofovir DF from Multi-tablet Ritonavir-Boosted Protease Inhibitor Plus Coformulated Emtricitabine and Tenofovir DF Regimens: Week 96 Results of STRATEGY-PI (vol 18, pg 118, 2017)