Dr. Atsushi Otsuka is a dermatologist in Osaka, Japan. He graduated from the Shinshu University in 2003 and received his PhD from Kyoto University in 2010. He served as a consultant dermatologist and associate professor in the Department of Dermatology at the Kyoto University Hospital from 2010 until 2020. After completed research fellowship of the Japan Society for the Promotion of Science in 2012, he pursued his post-doctoral research fellowship training in the Department of Dermatology at the Zurich University Hospital form 2012-2014. He has enhanced research collaboration and building on the achievements of dermatology research between Zurich-Kyoto institutions in 2014. He is currently working as a Professor and Chairman at Department of Dermatology, Faculty of Medicine, Kindai University. He has presented and published papers in both national and international journals. His fields of interests include psoriasis, melanoma, atopic dermatitis and allergy.

Dr. Mimi Chang graduated from the Chinese University of Hong Kong in 2003 with distinction in Medicine. She completed her basic and higher physician training in the Prince of Wales Hospital (PWH), obtaining her MRCP in 2006 and fellowships in Dermatology and Venereology and Advanced Internal Medicine in 2012. She was a clinical fellow in the Singapore National Skin Center, and visited Singapore General Hospital, in 2008-09. She pursued subspecialty training in Trichology under Professor R. Trueeb, Switzerland, in 2016 and in skin cancer and nail surgery under Prof E. Haneke and Dr. Loeser, Germany, in 2018. Dr. Chang was the Chief of Division of Dermatology and associate consultant in PWH, where she managed dermatology service, residency training and medical students teaching. She is a managing editor of the HKJDV and has contributed in local registries. Her subspecialty interests include hair and scalp disorders, hospital dermatology, blistering dermatoses and psoriasis. After working 15 years in hospital, she is now in private practice and visits the PWH weekly.