HDCN is divided into a FREE ZONE and a KEY ZONE. The latter is open only to paid subscribers. The FREE ZONE is open to all who have registered and contains symposia where sponsorship of a professional society or company was obtained to defray costs of preparation, storage, and file transfer charges. Currently the FREE ZONE symposia on HDCN are as follows: 2011 1.5 Kidney Disease in Type 2 Diabetes: Disease Progression and Emerging Therapies Philip Raskin, MD; Jennifer Marks, MD, Jerry Yee, MD, Mark Molitch, MD. For those interested in a paid subscription to HDCN click here.