Follow-up of patients treated with retinoic acid for the control of radioiodine non-responsive advanced thyroid carcinoma. S.M. Coelho, F. Vaisman, A. Buescu, R.C.R. Mello, D.P. Carvalho and M. Vaisman. Braz J Med Biol Res 2011; 44: 73-77.

Figure 2. Kaplan-Meier curve of progression-free survival (PFS) rate for all 16 patients included in the study.