Littlewood RA, White MS, Bell KL et al (2002) Comparison of the Cosmed K4 b2 and the Deltatrac II™ metabolic cart in measuring resting energy expenditure in adults. Clin Nutr 21:491–497Littlewood RA, White MS, Bell KL, Davies PSW, Cleghorn GJ, Grote R: Comparison of the Cosmed ...