Efficacy and Safety of Inhaled Ciclesonide in Treating Patients With Asymptomatic or Mild COVID-19 in the RACCO Trial: Protocol for a Multicenter, Open-label, Randomized Controlled Trial

Junko Terada-Hirashima   ¹ , MPH, MD ;   Manabu Suzuki   ¹ , MD ;   Yukari Uemura   ² , PhD ;   Masayuki Hojo   ¹ , MD, PhD ;   Ayako Mikami   ² , MD, PhD ;   Wataru Sugiura   ² , MD, PhD ;   Norio Ohmagari   ³ , MD, PhD ;   Haruhito Sugiyama   ¹ , MD, PhD

¹ Department of Pulmonary Medicine, Center Hospital of the National Center for Global Health and Medicine, Tokyo, Japan

² Center for Clinical Sciences, National Center for Global Health and Medicine, Tokyo, Japan

³ Disease Control and Prevention Center, Center Hospital of the National Center for Global Health and Medicine, Tokyo, Japan