P. Rustamadji, A. Tjarta, S. Cornain, M. Ramli, and E. Soetrisno, “E-cadherin and NM23HI as metastasis predictors for various degrees of histological malignancy in invasive ductal carcinoma”, Med J Indones, vol. 20, no. 4, pp. 263-70, Nov. 2011.