Composition #4: Kapadia, GJ., Balasubramanian, V., Tokuda, H., Konoshima, T., Takasaki, M., Koyama, J., Tagahaya, K., Nishino, H. Anti-tumor promoting effects of naphthoquinone derivatives on short term Epstein-Barr early antigen activation assay and in mouse skin carcinogenesis . cancer letters, 1997, vol. 113, no. 1-2, p. 47–53. DOI: 10.1016/S0304-3835(96)04582-X.
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