BACKGROUND The rise in the incidence of Crohn's disease (CD) suggests the role of an environmental factor in the development of the disease in susceptible individuals. Perinatal exposure to infection has been proposed as such an environmental factor. AIM To investigate the influence of birth date on the development of CD in later life. PATIENTS AND METHOD Four registers of patients with CD,...

A substantial loss of embryos occurs between Days 30 and 40 of pregnancy in the pig under crowded intrauterine conditions, but it is not clear whether this loss affects the growth of adjacent conceptuses. Birth intervals are known to increase with decreasing litter size, but the factors responsible are unknown. Two possibilities are that increased birth weight associated with reduced litter siz...

OBJECTIVE Our goal was to test the effect of prenatal and infancy home visits by nurses on mothers' fertility and children's functioning 7 years after the program ended at child age 2. METHODS We conducted a randomized, controlled trial in a public system of obstetric and pediatric care. A total of 743 primarily black women <29 weeks' gestation, with previous live births and at least 2 sociod...

background: around one out of two mothers give births by cesarean section (cs) surgery in iran and about half of this number is due to previous cs. recently health sector evolution (hsep) program (started in april 2014) targets the high rate of cs in iran. to assess the impact of the interventions, we emphasized that the first birth cesarean (fbc) proportion is one of the main indicators to ass...

730 low birth weight (lbw) neonates and 1460 controls were selected from 13,123 neonates born from october 1988 to june 1989 in 17 hospitals and maternity units in tehran, and were compared for mortality in the first seven and up to 28 days of life (early neonatal period). in this study all low birth weight newborns are divided according to four sub-groups of birth weight, and the mortality wit...

Standard electrocardiogram recordings were performed on a total of 7254 newly born infants from two maternity hospitals. Fifteen recordings were obtained on 15 infants who subsequently suffered sudden infant death syndrome. None showed lengthening of QT intervals sufficient to warrant the description of 'long QT syndrome'. When the QT intervals corrected for heart rate of cases with sudden infa...