A randomized placebo-controlled phase I clinical trial to evaluate the immunomodulatory activities of Atractylodes lancea (Thunb.) DC. in healthy Thai subjects - Kulma, I; Panrit, L; Plengsuriyakarn, T; Chaijaroenkul, W; Warathumpitak, S; Na-Bangchang, K (BMC Complement Med Ther, 2021)