005880000a22001690004500003000900000005001700009110003400026245015700060562003100217264004900248300000900297041000800306650002300314650003500337650003000372650001600402PH-MaWHO20241108112411.0  aWHO Global Programme on AIDS.  aOperational characteristics of commercially available assays to determine antibodies to HIV-1 and/or HIV-2 in human sera : report 2, Geneva, April 1990.  aGPA/BMR/90.1.--Unpublished  aGeneva : bWorld Health Organization,c1990.  a36p.  aeng  aAIDS serodiagnosis  aHIV antibodiesxDiagnostic use  aHIV infectionsxDiagnosis  aImmunoassay