Premature ovarian insufficiency: When ovaries retire early. - Sasha Sugianto, Stella Rizalina; Webber, Lisa; Husain Safdar, Farah; Viardot-Foucault, Veronique; Nadarajah, Sadhana; Ying Lim, Jiin; Ee Shien Tan; Tze Tein Yong; Puvanendran, Rukshini (Annals of the Academy of Medicine, Singapore, 2025)