[1]
G. Ozkececi, S. S. Ulasli, O. Akci, A. Avsar, M. Unlu, and E. Onrat, “The effect of sleep apnea severity on cardiac autonomic activity during night time in obstructive sleep apnea patients”, Sao Paulo Med J, vol. 134, no. 5, pp. 430–436, Oct. 2016.