title: Sacral Rheumatoid Nodule Mimicking Inflammatory Atheroma.
authors.affiliation: Department of Dermatology, Fukushima Medical University, Fukushima, Japan. E-mail: toyamade@fmu.ac.jp.
authors.forename: Yasunobu
authors.initials: Y
authors.lastname: Kato
authors.affiliation: Department of Dermatology, Fukushima Medical University, Fukushima, Japan. E-mail: toyamade@fmu.ac.jp.
authors.forename: Toshiyuki
authors.initials: T
authors.lastname: Yamamoto