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Estimating the sizes of hard-to-count populations is a challenging and important problem that occurs frequently in social science, public health, and public policy. This problem is particularly pressing in HIV/AIDS research because estimates of the sizes of the most at-risk populations-illicit drug users, men who have sex with men, and sex workers-are(More)
BACKGROUND The Brazilian response towards AIDS epidemic is well known, but the absence of a systematic review of vulnerable populations horizontal line men who have sex with men (MSM), female sex workers (FSW), and drug users (DU) remains a main gap in the available literature. Our goal was to conduct a systematic review and meta-analysis of studies(More)
These supporting online materials have 9 sections. Section 1 describes the known population and sum-mation methods of personal network size estimation and how we used the data from our study to decide between them. These personal network size estimates are used in the network scale-up and generalized network scale-up estimates described in Sections 2 and 3.(More)
which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited. One of the many challenges hindering the global response to the human immunodeficiency virus (HIV)/acquired immunodeficiency syndrome (AIDS) epidemic is the difficulty of collecting reliable information about the(More)
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