Rodriguez-Escudero JP, Pack QR, Somers VK, Thomas RJ, Squires RW, Sochor O, Allison TG, Lopez-Jimenez F. Diagnostic performance of skinfold method to identify obesity as measured by air displacement plethysmography in cardiac rehabilitation. J Cardiopulm Rehabil Prev. 2014 Sep-Oct; 34(5):335-42.