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. 2016 Apr 3;16:48. doi: 10.1186/s12887-016-0579-9

Fig. 1.

Fig. 1

Proportion of cases of extraocular disease at diagnosis in patients with unilateral and bilateral Rb from 1983 to 2012. Legend: At the point where the two lines meet (between 1993 and 1997), 33 % refers to unilateral cases and 31 % refers to bilateral cases. *Line red: bilateral extraocular *Line blue: unilateral extraocular