Rick Mendoza

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Schizophrenia is a genetically complex illness with heterogeneous clinical presentation, including variable age of onset. In this study, the heritability, or proportion of variation in age of onset of psychotic symptoms due to genetic factors, was estimated using a maximum likelihood method. The subjects were 717 members of families with more than one(More)
Schizophrenia is a complex psychiatric disorder, likely to be caused in part by multiple genes. In this study, linkage analyses were performed to identify chromosomal regions most likely to be associated with schizophrenia and psychosis in multiplex families of Mexican and Central American origin. Four hundred and fifty-nine individuals from 99 families,(More)
Caregivers (mothers and non-mothers) of HIV children face many challenges related to both physical demands and emotional well-being. The perception of caregivers in the Dominican Republic, a country greatly impacted by HIV/AIDS, in regard to their children's behaviour, has not been investigated to date. To extend understanding of the potential behavioural(More)
OBJECTIVE Variation in the serotonin transporter gene (SLC6A4) promoter region has been shown to influence depression in persons who have been exposed to a number of stressful life events. METHOD We evaluated whether genetic variation in 5-HTTLPR, influences current depression, lifetime history of depression and quantitative measures of depression in(More)
OBJECTIVE The purpose of this report is to describe behavioural problems encountered in a group of Dominican children living with Human Immunodeficency Virus/Acquired Immunodeficiency Syndrome (HIV/AIDS) in the Dominican Republic. They were not receiving antiretroviral treatment. METHOD The participants were 43 children with HIV infection (2 to 8 years of(More)
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