Miscarriage Trends and Blood Group Associations During the COVID-19 Pandemic: A Comparative Study in Ramsar, Iran. - Yaghoubinia, Kamelia; Roodgar, Masoumeh; Charati, Jamshid Yazdani; Mokhtari, Babak; Omrani, Atefeh; Farrokhfar, Samaneh (Iranian Journal of Nursing & Midwifery Research, 2026)