Identification of the small research tetra peptide Epitalon, assumed to be a potential treatment for cancer, old age and Retinitis Pigmentosa in two illegal pharmaceutical preparations., Vanhee, Celine, Moens Goedele, Van Hoeck Els, Deconinck Eric, and De Beer Jacques O. , Drug Test Anal, 2015 Mar, Volume 7, Issue 3, p.259-64, (2015)