4 McAnulty McAnulty JM JM Modesitt Modesitt SK SK Yusem Yusem SH SH Hyer Hyer CJ CJ Fleming Fleming DW DW Improved AIDS surveillance through laboratory-initiated CD4 cell count reporting Improved AIDS surveillance through laboratory-initiated CD4 cell count reporting J Acquir Immune Defic Syndr Hum Retrovirol J Acquir Immune Defic Syndr Hum Retrovirol 1997 1997 16 16 5 5 362 362 6 6 9420315 9420315. Here, CD4 is linked to AIDS.