Is circulating nitrite a directly acting vasodilator?: authors’ reply

*Academic Unit of Respiratory Medicine, Division of Clinical Sciences (South), Floor F, Medical School, University of Sheffield, Beech Hill Road, Sheffield S10 2RX, U.K.

*Academic Unit of Respiratory Medicine, Division of Clinical Sciences (South), Floor F, Medical School, University of Sheffield, Beech Hill Road, Sheffield S10 2RX, U.K.

†Department of Chemical and Process Engineering, University of Sheffield, Mappin Street, Sheffield S1 3JD, U.K.

‡Hinchingbrooke's Hospital, Huntington PE18 8NT, U.K.

*Academic Unit of Respiratory Medicine, Division of Clinical Sciences (South), Floor F, Medical School, University of Sheffield, Beech Hill Road, Sheffield S10 2RX, U.K.

*Academic Unit of Respiratory Medicine, Division of Clinical Sciences (South), Floor F, Medical School, University of Sheffield, Beech Hill Road, Sheffield S10 2RX, U.K.

*Academic Unit of Respiratory Medicine, Division of Clinical Sciences (South), Floor F, Medical School, University of Sheffield, Beech Hill Road, Sheffield S10 2RX, U.K.

*Academic Unit of Respiratory Medicine, Division of Clinical Sciences (South), Floor F, Medical School, University of Sheffield, Beech Hill Road, Sheffield S10 2RX, U.K.

§School of Applied Sciences, Anglia Polytechnic University, Cambridge CB1 1PT, U.K.