F. G. de C. Surita, M. Ângela Parpinelli, E. Yonehara, F. Krupa, and J. G. Cecatti, “Systemic lupus erythematosus and pregnancy: clinical evolution, maternal and perinatal outcomes and placental findings”, Sao Paulo Med J, vol. 125, no. 2, pp. 91–95, Mar. 2007.