1Pokela ML,Effect of opioid-induced analgesia on beta-endorphin cortisol and glucose responses in neonates with cardiorespiratory problems.Biol-Neonated,1993,64(6):360.
3Shook JE,Watkins WD,Camporesi EM,Differential roles of opioid receptors in respiration,respiratory disease,and opiate-induced respiratory depression Am Rev Respir Dis,1990,142:895.
4Malarkey WB,Pearl DK,Demers LM,et al.Influence of academic stress and season on 24-hour mean concentrations of ACIT,cortisol and betaendorphin.Psychoneuroendocrinology,1995,20(5):499.