00463nas a2200145   4500000000100000008004100001653000800042653003300050653000900083100003100092245010200123856007100225300001400296490000700310       2017                            d10aWHO10aPreventive chemotherapy (PC)10aNTDs1 aWorld Health Organization 00aSummary of global update on preventive chemotherapy implementation in 2016: crossing the billion.  uhttp://apps.who.int/iris/bitstream/10665/259184/1/WER9240.pdf?ua=1  a589–6080 v92