Suryandari, D. A., Yurnadi, Y., Wiweko, B. and Yunaini, L. (2012) “Genotype distribution of methylenetetrahydrofolate reductase A1298C and C677T gene in Indonesian infertile men”, Medical Journal of Indonesia, 21(1), pp. 23–7. doi: 10.13181/mji.v21i1.470.