Ptach, Łukasz, Agnieszka Perłowska-Ptach, Konrad Kowalski, Anna Bociąg, Rafał Marciniak, and Aleksandra Milewska. 2026. “PERIPARTUM CARDIOMYOPATHY: A COMPARATIVE ANALYSIS OF TWIN VERSUS SINGLETON GESTATIONAL RISKS: A NARRATIVE REVIEW”. International Journal of Innovative Technologies in Social Science 5 (3(51). https://doi.org/10.31435/ijitss.3(51).2026.6199.