2013-09-10Zeitschriftenartikel
Age biases in a large HIV and sexual behaviour-related internet survey among MSM
Marcus, Ulrich; Hickson, Ford; Weatherburn, Peter; Schmidt, Axel J.
Background: Behavioural data from MSM are usually collected in non-representative convenience samples, increasingly on the internet. Epidemiological data from such samples might be useful for comparisons between countries, ...