Sleep during basic combat training: a qualitative study. - Crowley SK; Wilkinson LL; Burroughs EL; Muraca ST; Wigfall LT; Louis-Nance T; Williams EM; Glover SH; Youngstedt SD; Crowley, Shannon K; Wilkinson, Larrell L; Burroughs, Ericka L; et al. (Military Medicine, 2012)