title: Swiss study switching to efavirenz.
mesh_terms: D000480:Alkynes; D048588:Benzoxazines; D018791:CD4 Lymphocyte Count; D015331:Cohort Studies; D003521:Cyclopropanes; D015658:HIV Infections / Q000188:drug therapy*; D006801:Humans; D010078:Oxazines / Q000008:administration & dosage / Q000627:therapeutic use*; D018894:Reverse Transcriptase Inhibitors / Q000008:administration & dosage / Q000627:therapeutic use*; D013557:Switzerland; D019562:Viral Load
chemical_list: D000480:Alkynes; D048588:Benzoxazines; D003521:Cyclopropanes; D010078:Oxazines; D018894:Reverse Transcriptase Inhibitors; C098320:efavirenz