https://www.reuters.com/article/us-health-coronavirus-grab/softbank-backed-grab-prepares-for-long-winter-as-virus-hits-revenue-idUSKBN22Q0SW >Softbank-backed Grab is preparing for a potentially "long winter", co-founder Tan Hooi Ling said on Thursday, as the ride-hailing firm's revenue takes a hit from the coronavirus outbreak.