Endobiliary radiofrequency ablation in recurrence and unresectable Perihilar cholangiocarcinoma. - Jareanrat, Apiwat; Thanasukarn, Vasin; Srisuk, Tharatip; Luvira, Vor; Tipwaratorn, Theerawee; Ahooja, Anucha; Loilome, Watcharin; Prajumwongs, Piya; Titapun, Attapol (BMC Gastroenterology, 2025)