Otaka, Shunichi, et al. “The Association Between Physician Involvement During Pediatric Out-of- Hospital Cardiac Arrest and Patient Outcomes: A Japanese Nation-Wide Observational Study”. Cardiology and Cardiovascular Medicine, vol. 6, no. 5, Sept. 2022, pp. 424-31, https://fortunejournals.org/ojs/index.php/ccm/article/view/16299.