@article{article4fa39935,
title   = {Overnight shift from obstructive to central apneas in patients with heart failure: role of 'P IND.'CO IND.2' and circulatory delay},
author = {Tkacova, Ruzeta and Niroumand, Mitra and Lorenzi-Filho, Geraldo and Bradley, T. Douglas,},
year = {2001},
journal   = {Circulation}
}