Assertion: quinine | /r/CapableOf | remain unchallenged
Facets:
value: for a further half century
type: TEMPORAL
Source sentences:
text: Indeed, quinine remained unchallenged for a further half century, when controlled trials showed that artemether and artenusate – which had also been derived from plants and used to treat fever (Tu 2011) – were shown to be superior to quinine in treating severe malaria (Sinclair et al. 2012;