Safety of Obstetric Ultrasound: Mechanical and Thermal Indexes—A Systematic Review. - Varthaliti, Antonia; Fasoulakis, Zacharias; Lygizos, Vasilios; Zolota, Vasiliki; Chatziioannou, Maria Ioanna; Daskalaki, Maria Anastasia; Daskalakis, George; Antsaklis, Panos (Journal of Clinical Medicine, 2024)