Experiment	Measurement	Reference
BaBar	\([1.08 \pm 0.32\mbox{ (stat)} \pm 0.36\mbox{ (syst)}] \times 10^{-3}\)	PRD 83, 032004 (2011)
Average	\(\mathbf{[1.08 \pm 0.48\mbox{ (combined)}] \times 10^{-3}}\)