Performance evaluation of tuberculosis smear microscopists working at rechecking laboratories in Ethiopia oleh Habtamu Asrat, Abebaw Kebede, Abnet Abebe, Abyot Meaza, Getinet Hailu, Adinew Desale, Andargachew Gashu, Wondwossen Kassa, Tesfaye Mekonnen, Ebisea Abose, Feven Girmachew, Dereje Yenealem, Achamyeleh Mulugeta, Gonfa Ayana, Kassu Desta