Heterotopic Pregnancy Presenting as Maternal Acute Abdomen at 19 Weeks of Gestation: A Case Report - Sahebdel, Behrokh; Golzar, Mohammad Hossein; Zare, Azita; Golshahi, Fatemeh; Saedi, Nafiseh; Shirazi, Mahboobeh (Case Reports in Clinical Practice, 2025)