005730000a22001690004500003000900000005001700009110006700026245009200093562003600185264004900221300000900270041000800279650003300287650004000320650002300360650002000383PH-MaWHO20241108112306.0  aWorld Health Organization. Expanded Programme on Immunization.  aProtocol for the assessment of the quality of surveillance and control of ePI diseases.  aWHO/EPI/GEN/93.22.--Unpublished  aGeneva : bWorld Health Organization,c1993.  a12p.  aeng  aCommunicable disease control  aCommunicable diseasesxEpidemiology  aClinical protocols  aData collection