China says it has launched an investigation into "issues" related to the death on Friday of a doctor whose early efforts to alert his colleagues to the dangers of a new coronavirus were quashed by authorities.
Meanwhile, President Trump spoke with China's leader Xi Jinping to discuss the coronavirus epidemic, which has rapidly gone global since it began in China in December.
Dr. Li Wenliang, an ophthalmologist working in Wuhan, the Chinese city where the epidemic originated, died on Friday local time, weeks after he was hospitalized and treated for a coronavirus infection.