All of the participants who answered that some diseases would be beyond the SLR were then asked what criteria they used to make their determination. The most com-monly expressed criteria, in order, regarding the diseases, were the likelihood of transmission, whether or not protective measures are available, and whether or not immunization is possible (66.7%, 65.2%, and 58.3%, respectively). The distribution of these criteria among the physicians and dentists can be seen in Table 3 . Physicians expressed significantly more often than dentists that if there was no immunization or treatment available for a particular disease, then that disease would exceed the SLR (p < 0.01). In terms of other criteria, there were no significant differences observed between the two groups.