1. Trocar site herniation following laparoscopic cholecystectomy and the significance of an incidental preexisting umhilical hernia;Azurin;Am Surg,1995
2. Combining laparoscopic cholecystectomy and (peri) umbilical herniorrhaphy;Ikard;Am. Surg,1995
3. Technical report: combined laparoscopic cholecystectomy and umbilical hernia repair,;Chouri;Minimally Invasive Therupy,1994
4. Umbilical defects associated with laparoscopic cholecystectomy;Nassar;Br J Srog,1995
5. Komplikationen nach laparoskopischer cholezystektomie;Rupp;Zentralbl Chir,1995