Elevated serum total cysteine predicts spontaneous abortion in Brazilian women: a pilot study - Guerra-Shinohara, Elvira Maria; Elshorbagy, A.; Stabler, Sally; Pereira, Perla Menezes; Kubota, Ananka Midori; Miyashita, Gerson Shigueo; Allen, Robert; Refsum, H. (International Conference on Homocysteine Metabolism, 2009)