Drupal-Bibcite10<style face="normal" font="default" size="100%">Crossing the billion: lymphatic filariasis, onchocerciasis, schistosomiasis, soil-transmitted helminthiases and trachoma: preventive chemotherapy for neglected tropical diseases.</style><style face="normal" font="default" size="100%">Crossing the billion: lymphatic filariasis, onchocerciasis, schistosomiasis, soil-transmitted helminthiases and trachoma: preventive chemotherapy for neglected tropical diseases.</style>