Answers are grounded in this paper and cite their sources.
Network meta-analysis allows comparisons between interventions, even in the absence of head-to-head trials http://ow.ly/exI630kfB4m
No takes yet. Share an insight, caveat, or question.
Dobler et al. (2018) studied this question.
Synapse has enriched 5 related papers. Consider them for comparative context: