RT Journal Article SR Electronic T1 Beta-endorphin levels in infant apnea syndrome: a preliminary communication JF Cleveland Clinic Journal of Medicine JO Cleve Clin J Med FD Cleveland Clinic SP 87 OP 92 VO 49 IS 2 A1 Orlowski, James P. A1 Lonsdale, Derrick A1 Denko, Charles W. YR 1982 UL http://www.ccjm.org/content/49/2/87.abstract AB