A meta analysis of lumbar spinal fusion surgery using bone morphogenetic proteins and autologous iliac crest bone graft.

PLoS One · 2014 · PMC4041715 · PMID 24886911

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a favorable trendno p-value reported

They also find that there was no statistical difference in clinical improvement on the ODI, although a favorable trend in the rhBMP-2 group was found.

also in 1,005 other papers

Quoted from the open-access full text in Europe PMC under the licence the publisher applied. The sentence is reproduced exactly as published; the emphasis is ours.