Boland LL, Shahar E, Wong TY, Klein R, Punjabi N, Robbins JA, Newman AB. Sleep-disordered breathing is not associated with the presence of retinal microvascular abnormalities: the Sleep Heart Health Study. Sleep. 2004  ;27(3):467-73.

Crainiceanu CM, Staicu A-M, Ray S, Punjabi N. Bootstrap-based inference on the difference in the means of two correlated functional processes. Stat Med. 2012  ;31(26):3223-40.