Left ventricular oxygen and substrate uptake in chronically hypoxemic lambs Dalinghaus, M.; Willem, J.; Gratama, C.; Koers, J.H.; Gerding, A.M.; Zijlstra, W.G.; Kuipers, J.R. Pediatric Research 34(4): 471-477 1993 0031-3998 10.1203/00006450-199310000-00017 https://eurekamag.com/research/008/950/008950230.php