00493nas a2200133   4500000000100000008004100001260004700042653003300089653002000122100003100142245007100173856009300244020002200337       2021                            d  c08/2021bWorld Health OrganizationaGeneva10aPreventive chemotherapy (PC)10aAdverse effects1 aWorld Health Organization 00aSafety in administering medicines for neglected tropical diseases   uhttps://apps.who.int/iris/bitstream/handle/10665/344059/9789240024144-eng.pdf?sequence=1  a978-92-4-002415-1