Department of Surgery;
Overland Park Surgery Center;
Overland Park;
KS;
USA;
Shawnee Mission Medical Center;
Shawnee Mission;
KS;
USA;
Department of Anesthesia;
Anesthesia Associates of Kansas City;
Overland Park;
KS;
USA;
Postoperative Pain; Hemorrhoidectomy; Liposome Bupivacaine; Postoperative Analgesia;