A woman smokes a Juul e-cigarette in New York, U.S., September 27, 2018. REUTERS/Brendan McDermid September 25, 2019 By Siddharth Cavale and Nivedita Balu (Reuters) – The chief executive of e-cigarette maker Juul stepped down on Wednesday as merger talks between its biggest investor Altria and Philip Morris collapsed in […]