Otitis externa due to allergic contact dermatitis to earphones and earplugs: A case control study - Youyou Jin, MSc; Wei Hua, MD; Qingfeng Liu, MM; Zili Zheng, EngD; Xinyi Yao, MSc; Xiangling Zhang, MSc; Mei Li, MM; Xiaoyun Zhang, BS; Ran Gao, BS; Xiaoyu Wang, BS; Yueyi Sun, BS; Li Li, MD; et al. (JAAD International, 2025)