ISLAMABAD: Former President and Co-Chairman of Pakistan Peoples Party Asif Ali Zardari was the first parliamentarian who signed the roll register after taking the oath. Earlier, Speaker National Assembly Ayaz Sadiq administered the oath from the newly elected members of the parliament. PTI chairman Imran Khan, PML-N Shahbaz Sharif, PPPP chairman Bilwal Bhutto Zardari and Asif Ali Zardari were seen sitting …