Cho H, Hwang IE, Lee M, Kwon W, Kim WH, Lee H.  Comparison of modified thoracoabdominal nerve block through perichondral approach and subcostal transversus abdominis plane block for pain management in laparoscopic cholecystectomy: a randomized-controlled trial.  Korean J Pain 2023;36:382-391.  https://doi.org/10.3344/kjp.23114