India's GDP growth is expected to slow to 6.7 per cent in the January-March quarter of this financial year as overall activity is yet to bounce back to levels seen prior to demonetisation, says a Nomura report.Though the adverse growth effects of demonetisation are waning, the pace of improvement is gradual and not yet broad based, the Japanese financial services major said."We expect GDP growth to slow from 7 per cent in October-December 2016 to 6.7 per cent in January-March 2017 as activity is yet to recover to levels seen prior to demonetisation," Nomura said in a research note.