Key points are not available for this paper at this time.
International Prospective Register of Systematic Reviews (PROSPERO): CRD42016048073; http: //www. crd. york. ac. uk/PROSPERO/displayᵣecord. php? ID=CRD42016048073 (Archived by WebCite at http: //www. webcitation. org/6usLCJK3v).
Cao et al. (Fri,) studied this question.
Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context: