The following article is retracted for ethical misconduct, since no institutional review board approval had been obtained for this human research.

The Influence of Hyperoxic Ventilation during Sodium Nitroprusside–induced Hypotension on Skeletal Muscle Tissue Oxygen Tension: Retraction 

Suttner SW, Lang K, Boldt J, Kumle B, Maleck WH, Piper SN: The influence of hyperoxic ventilation during sodium nitroprusside–induced hypotension on skeletal muscle tissue oxygen tension. Anesthesiology 2002; 96:1103–8