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``much of this delay in implementation can be attributed to the lack of coordination and cooperation between the city and county.''. erenumab (aimovig) is the first of four new migraine drugs in the pipeline that target calcitonin gene-related peptide (cgrp), a molecule that's produced in nerve cells of the. harvard medical school: "cgrp: a new era for migraine treatment.".© 2018 cable news network..why is melania trump still in hospital?.