1. Retraction notice to "Synthetic triterpenoids, CDDO-Imidazolide and CDDO-Ethyl amide, induce chondrogenesis" [Osteoarthr Cartil 20 (2012) 446–450]. Issue 6 (June 2020) Authors: Suh, N.; Paul, S.; Lee, H.J.; Yoon, T.; Shah, N.; Son, A.I.; Reddi, A.H.; Medici, D.; Sporn, M.B. Journal: Osteoarthritis and cartilage Issue: Volume 28:Issue 6(2020) Page Start: 865 Record Type: Journal Article View Content: Available online (eLD content is only available in our Reading Rooms) ↗