Environmental Research, 96(1), 51-61
Furthermore, direct questioning and a scrutiny of records of these patients showed that before the full development of the signs of toxaemia—that is, oedema, hypertension, and albuminuria—most had earlier in the pregnancy experienced a symptomatic stage characterized by relatively minor afflictions—for example, lethargy 43%, headache 48%, visual aura 37%, vertigo 29%, nausea and vomiting 16%, irritability 14%, depression 9%, and backache 6%. In fact, only 7% disclosed freedom from these symptoms during a toxaemic pregnancy.
Kantola, M., Purkunen, R., Kröger, P., Tooming, A., Juravskaja, J., Pasanen, M., Seppänen, K., Saarikoski, S., & Vartiainen, T. (2004). Selenium in pregnancy: is selenium an active defective ion against environmental chemical stress?. *Environmental research*, *96*(1), 51-61. https://doi.org/10.1016/j.envres.2004.03.003
Kantola M, Purkunen R, Kröger P, Tooming A, Juravskaja J, Pasanen M, et al. Selenium in pregnancy: is selenium an active defective ion against environmental chemical stress?. Environ Res. 2004;96(1):51-61. doi:10.1016/j.envres.2004.03.003
Kantola, M., et al. "Selenium in pregnancy: is selenium an active defective ion against environmental chemical stress?." *Environmental research*, vol. 96, no. 1, 2004, pp. 51-61.
Adult, Birth Weight/drug Effects, Female, Finland/epidemiology, Hair/chemistry, Humans, Infant, Newborn, Maternal Exposure/adverse Effects/statistics & Numerical Data, Placenta/enzymology/metabolism, Pregnancy, Pregnancy Trimester, First, Selenium/adverse Effects/blood/metabolism, Smoking/adverse Effects, Selenium