The safety of upper gastrointestinal endoscopic biopsy in patients receiving antithrombic drugs. A single-centre prospective observational study - Bozkurt, Hilmi; Ölmez, Tolga; Bulut, Can; Sert, Özlem; Keklikkıran, Zeynep; Karaköse, Erdal; Senger, Aziz; Akbulut, Sabiye; Polat, Erdal; Duman, Mustafa (Gastroenterology Review/Przegląd Gastroenterologiczny, 2020)