LAHORE : Punjab Healthcare Commission on Tuesday sealed 52 quack centres in different cities. According to a press release, the PHC teams had carried out crackdown on quacks in Lahore, Faisalabad, Attock, Gujranwala, Sahiwal, Khanewal, DG Khan, Bahawalpur, Jhang and Sargodha. The teams visited 208 treatment centres and closed down 52 centres.