Early insulin initiation in type 2 diabetes: efficacy, safety, and clinical implications: a systematic review with narrative synthesis - Osama Albasheer; Amal H. Mohamed; Nagla Abdalghani; Areej Hamdi; Doaa Abdulwahab Mohammed Ayish; Fatma Ayish; Ayyub Alssum; Ali Yahya Maashi; Lamyaa A. M. El Hassan; Tahani Madkhali; Mohammed Muqri; Aisha A. Awaf; et al. (Frontiers in Endocrinology, 2026)