The Apnea Positive Pressure Long-term Efficacy Study (APPLES): rationale, design, methods, and procedures

Kushida CA, Nichols DA, Quan SF, Goodwin JL, White DJ, Walsh JK, Schweitzer PK, Guilleminault C, Simon RD, Leary EB, Hyde PR, Holmes TH, Bloch DA, Green S, McEvoy LK, Gevins A, Dement WC. The Apnea Positive Pressure Long-term Efficacy Study (APPLES): rationale, design, methods, and procedures. J Clin Sleep Med., 2006 Jul 15; 2(3): 288-300. PMID:17561541.