Gesa-Kristina Petersen

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OBJECTIVE To study the influence of previous or present hepatitis B virus (HBV) infection on HIV disease progression. DESIGN A prospective study of HIV-positive individuals from HIV diagnosis to diagnosis of AIDS or to the end of the follow-up period on 1 January 1991. Mean follow-up time was 62 months. SETTING The study population was recruited from a(More)
In a single-subject design with replication across subjects, teacher prompts were used in an attempt to increase the rate of social behavior of three severely and profoundly retarded adolescents who were legally blind. Training took place in the classroom on successive school days with the teacher prompting each subject to engage in positive social(More)
Maternal language characteristics associated with language-delayed children were examined. Two age groups of Down syndrome children were matched on mean length of utterance (MLU) with two groups of nonretarded, language-delayed children and two groups of "normal" children, mostly from middle-class families. Twenty-minute audio tapes were recorded for each(More)
In order to study the influence of cigarette smoking and drinking of alcohol on the progression to acquired immunodeficiency syndrome (AIDS), eighty HIV infected homosexual men were included in a prospective study from the date of diagnosed HIV seropositivity. Two men were lost to follow-up. The mean follow-up time was 62 months. By the end of the follow-up(More)
The authors define for the purpose of this overview Asia and the Pacific to be the 46 countries and other administrative areas belonging to the Southeast Asia and Western Pacific regions of the World Health Organization. Defined as such, 55% of the world's population lives in the Asia-Pacific region. China, India, and Indonesia, three of the four most(More)
Ein Zusammenhang zwischen starker körperlicher Anstrengung und Erkranken an Poliomyelitis (in Epidemiezeiten) wurde auf Grund einzelner Beobachtungen wiederholt vermutet. Gleichwohl bestand in dieser Frage bisher eine sehr gegensätzliche Beurteilung über das Bestehen eines wirklichen Kausalzusammenhanges. Die Beobachtung einer recht schweren lokalen(More)