This is the study they cite: https://www.pnas.org/doi/abs/10.1073/pnas.1203396109 https://www.pnas.org/doi/abs/10.1073/pnas.1203396109 Is there something speci

This is the study they cite: https://www.pnas.org/doi/abs/10.1073/pnas.1203396109 https://www.pnas.org/doi/abs/10.1073/pnas.1203396109 Is there something specific you'd like to point out?