At least 201 Massachusetts residents died of opioid overdoses in the first three months of 2018, according to new Department of Public Health data, which shows the death toll for the quarter could rise to more than 500.In its latest quarterly report on opioid overdoses, the department said deaths declined by an estimated 5 percent over the first quarter of 2017.There were 201 confirmed fatal opioid-related overdoses from January through March of this year, according to [...]