MINNEAPOLIS, Aug. 27, 2019 (GLOBE NEWSWIRE) — Relievant Medsystems, a privately-held medical device company transforming the treatment of Chronic Low Back Pain (CLBP), today announced the publication of significant and clinically-meaningful outcomes from a prospective, open-label, single-arm, multi-center study in the European Spine Journal.  This study follows previous publication of two Level I, randomized, controlled multi-center …