Focal and diffuse fibrosing alopecias: Classical lichen planopilaris, frontal fibrosing alopecia, fibrosing alopecia with a pattern distribution, cicatricial pattern hair loss, and... oleh Xufeng Du, MD, Yuqian Li, MM, Qilin Zhu, MM, Jing Zhu, MM, Wengrong Xu, MD, Zhongming Li, MM, Dirk M. Elston, MD