KARACHI: Muhammad Ramzan Chhipa, founder of Chhipa Welfare Association called on PPP Chairman Bilawal Bhutto Zardari at Bilawal House here on Saturday. Ramzan Chhipa briefed the social work being carried out by his organisation including the ambulance service and other charity initiatives in Karachi. Talking to him, Bilawal Bhutto Zardari said that late Abdul Sattar Edhi was an icon of philanthropy and humanitarian work and his death created a huge vacuum. PPP Chairman said that PPP leadership has always worked closely with the prominent charity and humanitarian organizations in the country and this cooperation will continue in the future also. Central Information Secretary Pakistan Peoples Party Qamar-u-Zaman Kaira was also present on the occasion.