Drupal-Bibcite0<style face="normal" font="default" size="100%">Community mass treatment with azithromycin for trachoma: Factors associated with change in participation of children from the first to the second round.</style><style face="normal" font="default" size="100%">Community mass treatment with azithromycin for trachoma: Factors associated with change in participation of children from the first to the second round.</style>