Iron Deficiency as a Risk Factor for Adverse Cardiovascular Outcomes in Pediatric Heart Disease: A Systematic Review and Meta-Analysis. Principles and Practice of Clinical Research, [S. l.], v. 11, n. 3, 2026. DOI: 10.21801/ppcrj.2025.113.2. Disponível em: https://journal.ppcr.org/index.php/ppcrjournal/article/view/430.. Acesso em: 28 jan. 2026.