A Five-year-old Boy with a Thin Black Band on his Toenail: A Quiz
Bei Li,
Lin Ma,
Ya-Bin Zhou
Affiliations
Bei Li
Department of Dermatology, Beijing Children’s Hospital, Capital Medical University, National Center for Children’s Health, No. 56 Nan Lishi Rd, Xicheng District, Beijing 100045, China
Lin Ma
Department of Dermatology, Beijing Children’s Hospital, Capital Medical University, National Center for Children’s Health, No. 56 Nan Lishi Rd, Xicheng District, Beijing 100045, China
Ya-Bin Zhou
Department of Dermatology, Beijing Children’s Hospital, Capital Medical University, National Center for Children’s Health, No. 56 Nan Lishi Rd, Xicheng District, Beijing 100045, China
