Anaesthesia-related and perioperative cardiac arrest in low- and high-income countries. A systematic review with proportional meta-analysis and meta-regression - Braz, L. G. [UNESP]; Koga, F. A. [UNESP]; El Dib, R. [UNESP]; Wakasugui, W. [UNESP]; Roca, C. T. [UNESP]; Braz, J. R. C. [UNESP] (Lippincott Williams & Wilkins, 2014)