P. Vavra, P. Andel, A. Pelikan, L. Martinek, P. Gunkova, and I. Gunka, “Transanal endoscopic microsurgery: an indispensable component of contemporary coloproctology”, LS, vol. 3, no. 1, pp. 0–0, Jan. 2005, doi: 10.15388/LietChirur.2005.1.2331.