Experiment	Measurement	Reference
Belle	\([0.72 \pm 0.09\mbox{ (stat)} \pm 0.05\mbox{ (syst)}] \times 10^{-4}\)	Phys. Rev. D 93, 052016 (2016)
Average	\(\mathbf{[0.72 \pm 0.10\mbox{ (combined)}] \times 10^{-4}}\)