I would say that since we are much further along with aggregate reporting systems that we should proceed to try and link them. The pace of development of EMRs and their wide roll is far behind that of routine aggregate systems. Build the interoperability of these systems and when EMRs are ready and they many issues around them resolved (unique patient identifier being just one) they can then be brought into the existing and operating framework. Don’t wait for the EMRs! let us beuild what we can and when other elements become operational/available then let us add them in.