A retrospective study was carried out on a sample consisting of 89,491 deliveries occurred from 1979 through 1998, in the city of São Paulo, SP, Brazil. These deliveries included 935 twin and 26 triplet births. The mean incidence per 1,000 deliveries was estimated at 10.45 for twins (5.34 for dizygotic and 5.11 for monozygotic twins) and 0.29 for triplets. The average maternal age increased sig...

ôbjective: â rare phenomenon of shared psychosis disorder occurring in the context of bipolar ï disorder, in identical twins is reported. çase presentation: two identical twins with shared psychotic manic syndrome were admitted and received antipsychotic and lithium as their treatment. psychotic symptoms of primary case did not improve and her diagnosis changed into schizophrenia. they had hypo...

to assess the relative contribution of genetic and environmental factors (particularly androgens) on circulating levels of lipid fractions, serum androgen and lipid fractions were measured in 34 pairs of female-female twins aged from 15- 45 years, some of whom were discordant for polycystic ovary syndrome (pcos) diagnosed by ultrasound. nineteen pairs were monozygotic twins (mz) and 15 pairs we...

Biometric recognition based on human characteristics for personal identification has attracted great attention. The performance of biometric systems highly depends on the distinctive information in the biometrics. However, identical twins having the closest geneticsbased relationship are expected to have maximum similarity between their biometrics. Classifying identical twins is a challenging p...

To disentangle an independent effect of educational status on mortality risk from direct and indirect selection mechanisms, the authors used a discordant twin pair design, which allowed them to isolate the effect of education by means of adjustment for genetic and environmental confounding per design. The study is based on data from the Danish Twin Registry and Statistics Denmark. Using Cox reg...

Densest k-Subgraph is the problem to find a vertex subset S of size k such that number edges in subgraph induced by maximized. In this paper, we show fixed parameter tractable when parameterized neighborhood diversity, block deletion number, distance-hereditary and cograph respectively. Furthermore, give 2-approximation \(2^{{{\texttt{tc}}(G)}/2}n^{O(1)}\)-time algorithm where \({{\texttt{tc}}(...

Background: Twin low-birth-weight (LBW) neonates are exposed to the increased risk of mortality and morbidity due to poor prognosis. The present study aimed to evaluate the effectiveness of kangaroo mother care (KMC) in the management of twin LBW neonates. Methods: This prospective, observational study was conducted on 150 neonates with the birth weight of

Four pairs of monozygotic twins were tested for synchronous responses that occurred in the physiological data of one twin during the period when the other twin was exposed to shock and surprise stimuli. Each of the five stimuli was presented in random order, producing five blocks of trial periods within each 25-minute session per twin. There were eight possible trial periods within each block. ...

The Chinese National Twin Registry (CNTR), established in 2001, is the first and largest population-based twin registry in China. Based on the CNTR, a new twin cohort was recruited from 2011 to study the relationship between environmental risk factors and chronic diseases. So far, 33,874 twin pairs from nine provinces have been recruited, in which hundreds of disease-discordant twin pairs and e...

OBJECTIVES In monoamniotic twin pregnancies discordant for fetal anomaly, parents may opt for selective feticide. However, the normal co-twin remains at risk of sudden demise from cord entanglement. We report on three cases of successful selective feticide by cord occlusion combined with cord transection. METHODS We describe technical details and outcome of three monoamniotic twin pregnancies...