Katayama H, Ohsawa K, Yaoita H. Improvement of progressive systemic sclerosis (PSS) with estriol treatment. Acta Derm Venereol [Internet]. 1984 Mar. 1 [cited 2024 Sep. 26];64(2):168-71. Available from: https://medicaljournalssweden.se/actadv/article/view/7024