TOKYO :The Bank of Japan should pick up the pace of tapering government bond purchases as the possibility of a pause in interest rate hikes will give the central bank more wiggle room to adjust the tapering plan, Mizuho Financial Group's markets chief told Reuters. Kenya Koshimizu, co-head of the global markets division at Japan's third-largest lender, made the call ahead of the BOJ conducting a review of its existing bond tapering plan in June. Voices of major market participants like Mizuho