Aktaş, İbrahim, Güney Sarıoğlu, and Erdoğan Yaşar. “Effects of COVID-19 Lockdown on Time in Therapeutic Range (TTR) for Warfarin Users”. The European Research Journal (May 1, 2026): 1–7. Accessed April 5, 2026. https://eurj.org.tr/article/view/1141.