MARYVILLE, Mo. — Longtime County Coroner Dr. Vince Shelby will retire at the end this year, and two candidates, Jeff Hall and David Merrill, will vie to replace him. Hall spent 20 years with the Nodaway County Ambulance District before leaving for Clarinda, Iowa, where he currently works as a paramedic. He said during last week’s candidate forum that he plans to continue working in that role, which requires him to be in Clarinda about seven or eight days a month, if he’s elected to the coroner post.