@misc{misc10023b46,
title   = {Operating with data - statistics for the cardiovascular surgeon [Editorial]: Part III. Comparing Groups},
author = {Liguori, Gabriel Romero and Moreira, Luiz Felipe Pinho},
year = {2018},
doi = {10.21470/1678-9741-2018-0378},
journal   = {Brazilian journal of cardiovascular surgery}
}