TY - RPRT TI - Implementation of proficiency testing in conjunction with a rechecking system for external quality assurance in tuberculosis laboratories in Mexico. AU - A Martinez-Guarneros AU - S Balandrano-Campos AU - M A Solano-Ceh AU - F Gonzalez-Dominguez AU - H B Lipman AU - J C Ridderhof AU - A Flisser PY - 2003 UR - https://pubmed.ncbi.nlm.nih.gov/12797692/ ID - 12797692 ER -