H Schäfer

Heart rate variability in patients with sleep-related breathing disorders.

B Lüderitz, B. Lüderitz, S. Ewig, 1996, Cardiology.

Is obstructive sleep apnea (OSA) a risk factor for myocardial infarction and cardiac arrhythmias in patients with coronary heart disease (CHD)?

U Koehler, U. Koehler, H. Schäfer, 1996, Sleep.

Predictive diagnostic value of clinical assessment and nonlaboratory monitoring system recordings in patients with symptoms suggestive of obstructive sleep apnea syndrome.

B Lüderitz, B. Lüderitz, S. Ewig, 1997, Respiration; international review of thoracic diseases.