“…18,[21][22][23][24][25][26][27][28][29][30][31][32][33][34][35][36][37][38][39][40] All studies were retrospective except for three which were prospective, 27,30,34 including two randomized trials. 30,34 Some studies reported specific data for solitary 18,22,24,26,28,32,34,36,39,40 or small tumours. 18,22,26,[30][31][32][34][35][36]40 A study based on a theoretical mathematical analysis using the Markov modelling to simulate a randomized trial of RFA and HR for HCC less than 5 cm was also retrieved and discussed, but its numeric data were not included.…”