https://homosaurus.org/v3/homoit0000638 homoit0000638 Serodiscordant couples HIV-serodiscordant couples 2019-05-14 xsd:date 2021-12-08 xsd:date https://homosaurus.org/v3/homoit0000635 Personas negativas al VIH https://homosaurus.org/v3/homoit0000636 Personas positivas al VIH Partnerships in which one person has HIV and the other does not.