Results of written tests and OSCE. Legend: (a) The results of the written pre-test, post-test 1 and post-test 2 for users and non-users of NESTOR showed significant improvement in post-test 1 and 2 for both groups, compared to the pre-test (p < 0.001). NESTOR users further improved significantly from post-test 1 to 2 (p = 0.009), whereas non-users did not. (b) The Results of the objective structured clinical examination (OSCE) showed no differences comparing users and non-users of NESTOR. Whisker = standard deviation.