3Olsson.C, Nilsson-Wikmar. Health related quality of life and physical ability among pregnant women with and without back pain in late pregnancy[J].Acta Obstet Gynecol Scand, 2004,83(4):351-357.
3Brunner Dp, Munch M, Biedermann K,et al. Changes in sleep and sleep electroencephalogram during pregnancy[J]. Sleep, 1994, 17 (7): 578-582.
4Bennett HA,Einarson A,Taddio A,et al. Prevalence of depression during pregnancy: Systematic review[J]. Obstet Gynecol, 2004,103 (4) :698 - 709.
5Heron J,Connor TG, Evans J,et al. The course of anxiety and depression through pregnancy and the postpartum in a community sample[J].J Affect Disorders, 2004,80 (1) : 65 - 73.
6Olsson C, Nilsson- Wikmar L. Health- related quality of life and physical ability among pregnant women with and without back pain in late pregnancy[J]. Acta Obstet Gynecol Scand,2004,83(4) :351 -357.
2Suzuki S, Dennerstein L, Greenwood KM, et al.Sleeping patterns during pregnancy in Japanese women [J].Journal of Psychosomatic Obstetrics and Gynaecology, 1994, 15( 1 ) : 19-26.
3Brunner DP,Munch M,Biedermann K,et al.Changes in sleep and sleep electroen-cephalogram during pregnancy [J].Sleep, 1994, 17(7) :578-582.
4Hedman C, Pohjasvaarab T, Tolonend U, et al.Effects of pregnancy on mothers'sleep [J ].Sleep Medicine, 2002,3 ( 1 ) : 37-42.
5Franklin KA, Holmgren PA, Jonsson F, et al.Pregnancy-induced hypertension and growth retardation of the fetus [J].Chest, 2000, 117(1) : 137-141.
6Miehele L, James M, Anna L, et al.How disturbed sleep may be a risk factor for adverse pregnancy outcomes [ J ] .Obstetrical and Gynecological Survey, 2009,64 (4) : 273-280.
7Field T, Diego M, Hemandez-Reif M, et al.Sleep disturbances in depressed pregnant women and their newborns [J].Infant Behavior and Development, 2007,30( 1 ) : 127-133.
8Loube DI, Poceta JS, Morales MC, et al.Self-reported snoring in pregnancy.Associ-ation with fetal outcome [J].Chest, 1996, 109 (4) : 885-889.
9Sahlin C,Franklin KA,Stenlund H,et al.Sleep in women: normal values for sleep stages and position and the effect of age, obesity, sleep apnea, smoking, alcohol and hypertension [J]. Sleep Medicine, 2009,10 (9) : 1025-1030.
10Jenkins CD,Stanton BA,Niemcryk SJ,et al.A Scale for the estimation of sleep problems in clinical research [J] .Journal of Clinical Epidemiology, 1988,41 (4) : 313-321.