Corrigendum to “Mathematical model of modified hybrid pump mechanism for cardiopulmonary resuscitation” [Computer methods and programs in biomedicine 206 (2021) 106106]

The authors regret that there were errors in certain parts of the paper. There was a simple error in the formula when applying head-up tilt (HUT) and head-down tilt (HDT) to both models. This error changes aspects of the graph provided in Section 3.3 ( Fig. 5 and Supplementary Figures S3). Consequently, both models showed similar tendencies for coronary perfusion pressure (CPP) and cerebral blood flow (CeBF), and contrary to previous results, there was a similar trend in the animal models for both HUT and HDT. However, the conclusions for HUT and HDT do not change as it does not change that the two models have different tendencies in venous returns. By correcting the error and repeating all the results, we confirmed no problem in other sections. Reassuringly, the main messages of the paper remain the