Okada K., Saito H., Nishida J., Miyakoshi N., Takahashi S., Nagasawa H., Suzuki N. and Chida S. (2009) “Discal Cyst Associated with Myxoid Change and Apoptosis of Herniated Disc Materials”, Upsala Journal of Medical Sciences, 112(1), pp. 39–47. doi: 10.3109/2000-1967-093.