1. Red River and October, Paramecium Pond by Gordon Mortenson
Margaret R. Wentz, BA 
Mayo Clinic Proceedings 
Volume 92, Issue 10, (October 2017)
DOI: /j.mayocp
Copyright © 2017 Mayo Foundation for Medical Education and Research Terms and Conditions

2. Mayo Clinic Proceedings 2017 92, DOI: (10.1016/j.mayocp.2017.08.012)
Copyright © 2017 Mayo Foundation for Medical Education and Research Terms and Conditions

3. Mayo Clinic Proceedings 2017 92, DOI: (10.1016/j.mayocp.2017.08.012)
Copyright © 2017 Mayo Foundation for Medical Education and Research Terms and Conditions