Aminolevulinic Acid|Levulan Kerastick. Clinical Pharmacology. Accessed 4/21/15 from http://www.clinicalpharmacology.com
Levulan Kerastick. DUSA Pharmaceuticals, Inc. Accessed 4/21/15 from http://www.dusapharma.com/levulan-product-information.html#fullpinfo