Letters to the EditorLETTERS TO THE EDITOR Letter About “The DO Difference: An Analysis of Causal Relationships Affecting the Degree-Change Debate” Marlow B. Hernandez, OMS III Notes and Affiliations Notes and Affiliations Published: January 1, 2010 Marlow B. Hernandez, OMS III, Nova Southeastern University College of Osteopathic Medicine, Fort Lauderdale, Florida J Osteopath Med; 110(1): 45-46 https://doi.org/10.7556/jaoa.2010.110.1.45