Has the study of Richard Davidson with Tibetan Buddhist monks ever been reproduced?

This PNAS study: https://www.pnas.org/doi/full/10.1073/pnas.0407401101 Richard Davidson mentioned one group who has reproduced it. And Matthieu Ricard was a test person in this paper. We sah once a YouTube video about it, but we do not know which paper it is. But who else has reproduced this PNAS paper?