^Du XF, Jiang CZ, Wu CF, Won EK, Choung SY (tháng 9 năm 2008). “Synergistic immunostimulating activity of pidotimod and red ginseng acidic polysaccharide against cyclophosphamide-induced immunosuppression”. Archives of Pharmacal Research. 31 (9): 1153–9. doi:10.1007/s12272-001-1282-6. PMID18806958.