Assertion: sids's cause | /r/HasProperty | beckwith
Facets:
Source sentences:
text: At the Second International Conference on Causes of Sudden Death in Infants in 1969, a definition of SIDS was proposed by Beckwith as “the sudden death of any infant or young child which is unexpected by history, and in which a thorough postmortem examination fails to demonstrate an adequate cause of death” (Beckwith 1970).