{{Cite journal| doi = 10.1136/bmjgh-2019-001878| issn = 2059-7908 (Print) 2059-7908 (Electronic) 2059-7908 (Linking)| volume = 4| issue = 6| pages = –001878| last1 = Kuehne| first1 = A.| last2 = Keating| first2 = P.| last3 = Polonsky| first3 = J.| last4 = Haskew| first4 = C.| last5 = Schenkel| first5 = K.| last6 = Le Polain de Waroux| first6 = O.| last7 = Ratnayake| first7 = R.| title = Event-based surveillance at health facility and community level in low-income and middle-income countries: a systematic review| journal = BMJ Glob Health| date = 2020-01-08| pmid = 31908863}}