Kaizen method for esophagectomy patients: improved quality control, outcomes, and decreased costs (Provisional abstract)      
Ketorolac is underutilized after ureteral reimplantation despite reduced hospital cost and reduced length of stay (Provisional abstract)      
Kidney transplantation in the elderly: a decision analysis (Structured abstract)      
Knee arthroscopy and exercise versus exercise only for chronic patellofemoral pain syndrome: a randomized controlled trial (Provisional abstract)      
KRAS and BRAF mutation analysis in metastatic colorectal cancer: a cost-effectiveness analysis from a Swiss perspective (Structured abstract)      
KRAS early testing: consensus initiative and cost-effectiveness evaluation for metastatic colorectal patients in an Italian setting (Provisional abstract)      
Krefeld CONTRA study: conventional peroral esophago-gastro-duodenoscopy (EGD) vs. Transnasal EGD a prospective and randomised study with independent evaluation of conscious sedation, endoscope diameter, and access path (Provisional abstract)