TY - RPRT TI - A mutation in human immunodeficiency virus reverse transcriptase and decline in CD4 lymphocyte numbers in long-term zidovudine recipients. AU - M J Kozal AU - R W Shafer AU - M A Winters AU - D A Katzenstein AU - T C Merigan PY - 1993 DO - 10.1093/infdis/167.3.526 UR - https://pubmed.ncbi.nlm.nih.gov/7680058/ ID - 7680058 ER -