A high crosslinking grade of hyaluronic acid found in a dermal filler causing adverse effects, Keizers, Peter H. J., Vanhee Celine, van den Elzen Eef M. W., de Jong Wim H., Venhuis Bastiaan J., Hodemaekers Hennie M., Schwillens Paul, and Lensen Daan G. W. , Journal of Pharmaceutical and Biomedical Analysis, Jan-09-2018, Volume 159, (2018)