HAVERHILL, MA – JUNE 3: Stephen Barbour sits up, alert in bed, while going through detox at Serenity at Summit rehab center in Haverhill, Mass, Friday, June 3, 2016. The effects of detox were severe for Barbour, who had built a high tolerance for heroin. He felt he wasn’t being given enough suboxone to help him combat withdrawal symptoms. (Photo by Gabe Souza/Staff Photographer)

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