PDxMD Dermatology is a paper compilation based on an extensive electronic reference text developed and maintained by Elsevier Science. The source electronic version is a proprietary "evidence-based primary care information system." That is, the editors at Elsevier have enlisted the help of expert internists, family doctors, and subspecialists to compile by disease topic the best information regarding the diagnosis, evaluation, and management of processes commonly seen by general physicians.
Alam M. PDxMD Dermatology. Arch Dermatol. 2004;140(8):1018-1019. doi:10.1001/archderm.140.8.1018