de la RosetteJJ, OpondoD, DaelsFPet al.Categorisation of complications and validation of the Clavien score for percutaneous nephrolithotomy. Eur Urol, 2012; 62:246–255.
2.
DindoD, DemartinesN, ClavienPA. Classification of surgical complications: A new proposal with evaluation in a cohort of 6336 patients and results of a survey. Ann Surg, 2004; 205–213.