Increased circulating cell-free hemoglobin levels reduce nitric biovailability in preeclampsia - Sandrim, Valéria C.; Montenegro, Marcelo F.; Palei, Ana C. T.; Metzger, Ingrid F.; Sertorio, Jonas T. C.; Cavalli, Ricardo de Carvalho; Tanus-Santos, José Eduardo (Free Radical Biology and Medicine, 2010)