Page Content Bimonthly Quality Improvement Forum calls allow APHL members to share quality improvement activities and learn new techniques. Contact Tina Su to add your email address to the distribution list and receive call information. Presentation description: John Shalkham, director of quality assurance at the Wisconsin State Laboratory of Hygiene, presented a basic overview of terminology associated with Quality Laboratory Service and reviewed the construction and/or update of a quality assurance plan. PowerPoint Presentation File. May 2013 Presentation Recording.