Am. j. respir. crit. care med. Am. j. respir. crit. care med. Haptoglobin preserves vascular nitric oxide signaling during hemolysis Schaer Christian A. Deuel Jeremy W. Schildknecht Daniela Mahmoudi Leila Garcia-Rubio Ines Owczarek Catherine Schauer Stefan Kissner Reinhard Banerjee Uddyalok Palmer Andre F. Spahn Donat R. Irwin David C. Vallelian Florence Buehler Paul W. Schaer Dominik J. 2016 research-article