(April 28, 2017, 9:37 AM EDT) -- MINNEAPOLIS — A Minnesota federal judge on April 25 certified a class of more than 3,200 people who received an unsolicited fax advertisement for lead-testing services and denied a motion by the sender to dismiss the lawsuit (Sandusky Wellness Center, LLC, et al. v. MedTox Scientific, Inc., et al., No. 12-2066, D. Minn., 2017 U.S. Dist. LEXIS 62838)....