Multiple Sampling in One Day to Optimize Smear Microscopy in Children with Tuberculosis in Yemen Al-Aghbari, Nasher ; Al-Sonboli, Najla ; Yassin, Mohammed A. ; Coulter, John B. S. ; Atef, Zayed ; Al-Eryani, Ali ; Cuevas, Luis E. Abstract Publication: PLoS ONE Pub Date: April 2009 DOI: 10.1371/journal.pone.0005140 Bibcode: 2009PLoSO...4.5140A