Mangel AW, Fehnel SE. End points in irritable bowel syndrome. Expert Rev Gastroenterol Hepatol. 2011 Jun 1;5(3):293-5.
Frisancho AR, Juliao PC, Barcelona V, Kudyba CE, Amayo G, Davenport G, Knowles A, Sanchez D, Villena M, Vargas E, Soria R. Developmental components of resting ventilation among high- and low-altitude Andean children and adults. Am J Phys Anthropol. 1999 Jul;109(3):295-301. doi: 3.0.CO;2-U">10.1002/(SICI)1096-8644(199907)109:3<295::AID-AJPA2>3.0.CO;2-U