Artificial oocyte activation in ICSI cycles in severe male infertility cases: is calcium ionophore or piezoelectric better? - Akpınar, Ayşe Altun; Balcı, Burçin Karamustafaoğlu; Çelik, Çiğdem; Edgü, Büşra Duymaz; Akgül, Cemil (Middle East Fertility Society Journal, 2026)