Severe underquantification of HIV-1 group O isolates by major commercial PCR-based assays. - Berger, A.; Muenchhoff, M.; Hourfar, K.; Kortenbusch, M.; Ambiel, I.; Stegmann, L.; Heim, A.; Sarrazin, C.; Ehret, R.; Daniel, V.; Wasner, M.; Plantier, J.-C.; et al. (Clinical Microbiology & Infection, 2020)