Mais um artigo científico que é uma pérola:
Koelman, C (2000). “Correlation between oral sex and a low incidence of preeclampsia: a role for soluble HLA in seminal fluid?”. Journal of reproductive immunology (0165-0378), 46(2), p. 155.
Correlation between oral sex and a low incidence of preeclampsia: a role for soluble HLA in seminal fluid