Furthermore, an UpToDate review on “Stress urinary incontinence in women: Persistent/recurrent symptoms after surgical treatment” (Morgan, 2020) states that “Several materials are available for periurethral injection therapy. Products that are now commonly used include: Polyacrylamide hydrogel (Bulkamid): a homogeneous, stable hydrophilic polymer gel composed of 2.5 % cross-linked dextranomer polyacrylamide and 97.5 % water, available in Europe”.