FoscarnetInjectionsPhosphonoacetic AcidGanciclovirAntiviral AgentsCytomegalovirus RetinitisMedication ErrorsMedication AdherenceOrganophosphorus CompoundsAcyclovirCytomegalovirus InfectionsCytomegalovirusRetinitisSkin Diseases, ViralMedication ReconciliationMedication SystemsOrganophosphonatesMedication Systems, HospitalStomatitis, HerpeticInjections, IntramuscularCytosineInjections, IntravenousAIDS-Related Opportunistic InfectionsHerpes LabialisAdministration, TopicalAcquired Immunodeficiency SyndromeInjections, SubcutaneousInjections, IntralesionalInjections, Intra-ArticularRoseolovirus InfectionsOintmentsDNA-Directed DNA PolymeraseHerpes SimplexDrug Resistance, ViralTreatment OutcomeZidovudinePrescription DrugsSelf Medication