In the law firmsGrant Law LLC added Porsha R. Winters as an associate. She focuses on commercial litigation and employment law.• Vedder Price P.C. shareholders Kathryn L. Stevens and Ethan E. Rii were named co-chairs of the health-care and professional associations practice group.Stevens concentrates her practice in commercial finance, representing major lenders in loan transactions exclusively in the health-care industry.Rii focuses on health-care transactions and regulatory matters surrounding mergers and …