@article{articlecad17ddf,
title   = {The emergence of salivary cortisol circadin rhythm and its relationship to sleep activity in preterm infants},
author = {Antonini, Sonir Roberto Rauber and Jorge, Salim Moysés and Moreira, Ayrton Custódio},
year = {2000},
doi = {10.1111/j.1365-2265.2000.tb00561.x},
journal   = {Clinical Endocrinology}
}