There are multiple definitions:

1. epicardial fat volume(English)

   • IFV
   • Cardiology

2. efavirenz(English)

   • a potent nonnucleoside reverse transcriptase inhibitor used as part of combination antiretroviral (ARV) regimens in the treatment of human immunodeficiency virus (HIV) infection. A component of HIV combination therapy
   • TFV, HIV, FTC, RPV, AE, ARV, NPAE, NNRTI
   • Therapeutic approaches, AIDS
   • https://doi.org…csptsci.0c00015
   • https://doi.org…09967-4.00013-2