LUCKNOW, March 21 -- With four more persons testing positive for coronavirus in Lucknow on Friday, the total count of cases in Uttar Pradesh reached 23, said Dr Vikasendu Agrawal, state surveillance officer, health department, UP. "Of the four who tested positive today, two are woman, aged 20 and 28, while two are men, aged 35 and 27," said Dr Sudhir Singh, spokesperson, King George's Medical University (KGMU) where the samples were tested....