@misc{misc75b76b5b, title = {The “four-finger ruler” as a novel, simple and easy technique for hands placement during CPR training. [Carta]}, author = {Nakagawa, Naomi Kondo and Salles, I. C and Costa, M. M and Pinho, J. L and Boettiger, Bernd Walter}, year = {2023}, doi = {10.1016/j.resuscitation.2023.109724}, journal = {Resuscitation} }