TY - GEN AU - Barnes,D J AU - Laks,L TI - Sleep studies in patients before CPAP treatment. One night or two? SN - 0012-3692 PY - 1994///0802 KW - Humans KW - Positive-Pressure Respiration KW - Sleep Apnea Syndromes KW - diagnosis N1 - Publication Type: Comment; Letter UR - https://doi.org/10.1378/chest.106.1.324 ER -