The impact of perioperative positive fluid balance on postoperative acute kidney injury in patients undergoing open hepatectomy: A retrospective single center cohort study - Natsuda Phothikun; Orapan Pantatong; Maytinee Kulpanun; Somchai Wongpunkamol; Worakitti Lapisatepun; Amarit Phothikun; Warangkana Lapisatepun (PLoS ONE, 2025)