Prime Minister Narendra Modi today called two former Presidents, Pranab Mukherjee and Pratibha Patil, former Prime Ministers Manmohan Singh and HD Devegowda, and a score of opposition leaders to discuss the coronavirus outbreak in the country, sources told NDTV.Among the other leaders he called up were Congress's Sonia Gandhi, Samajwadi Party's Mulayam Singh and Akhilesh Yadav, Trinamool chief and Bengal Chief Minister Mamta Banerjee, Odisha's Naveen Patnaik, south leaders KCR, MK Stalin, and ally Parkash Singh Badal.