Eva Engel؛ Heidi Ulrich؛ Rudolf Vasold؛ وآخرون (2008). "Azo Pigments and a Basal Cell Carcinoma at the Thumb". Dermatology. ج. 216 ع. 1: 76–80. DOI:10.1159/000109363. PMID:18032904.
nih.gov
pubmed.ncbi.nlm.nih.gov
Eva Engel؛ Heidi Ulrich؛ Rudolf Vasold؛ وآخرون (2008). "Azo Pigments and a Basal Cell Carcinoma at the Thumb". Dermatology. ج. 216 ع. 1: 76–80. DOI:10.1159/000109363. PMID:18032904.