5.Weber G, Adamczyk A, Freytag S. [Treatment of acne with a yeast preparation]. [Article in German] Fortschr Med. 1989 Sep 10;107(26):563-6. http://www.ncbi.nlm.nih.gov/pubmed/2530145
5.Weber G, Adamczyk A, Freytag S. [Treatment of acne with a yeast preparation]. [Article in German] Fortschr Med. 1989 Sep 10;107(26):563-6. http://www.ncbi.nlm.nih.gov/pubmed/2530145