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Forfatterbidrag: idé, utforming/design, litteratursøk, utarbeiding/revisjon av manuset samt godkjenning av innsendte manusversjon.
Per E. Børdahl er spesialist i fødselshjelp og kvinnesykdommer, pensjonert klinikkoverlege og professor.
Articles by Per E. Børdahl
Determining paternity before DNA – the significance of pregnancy duration
- Per E. Børdahl,
- Erlend Hem
04.06.2026:
As late as the 1980s, some maternity wards still hung a board above mothers' beds, with a chart showing the patient's temperature, pulse and the letter V or S. V stood for vera (true), indicating that the child was born in wedlock, while S for spuria (false) meant that the child had been born out of...
How has pregnancy duration been determined throughout history?
- Per E. Børdahl,
- Erlend Hem
17.12.2025:
The end of pregnancy can be recorded with precision, but determining when it started is more challenging. Should it be calculated from the intercourse that led to fertilisation, from ovulation, from fertilisation itself, or from implantation? In any case, pregnancy does not actually begin on the...
Sandborg-Vedeler's forceps – an innovation in the golden age of obstetric forceps
- Per E. Børdahl,
- Erlend Hem
25.06.2025:
Few medical disciplines have undergone such a radical transformation due to a single instrument as obstetrics did with the introduction of forceps: they made it possible to save both mother and child (1). In Europe, forceps came into use in the 1730s. Modifications quickly followed, and in the 1740s...
Ragnhild Vogt Hauge – psychiatrist, pioneer and member of the Norwegian Nazi party
- Erlend Hem,
- Per E. Børdahl
20.06.2019:
Our interest in this story arose in relation to the article on the psychiatrist Augusta Rasmussen (1895–1979) (1). While working on that article, we constantly came across the name of Ragnhild Vogt Hauge, a person unknown to us. We became curious about who she was. Her story helps elucidate...
Always stay cheerful – health information in the 1920s
- Erlend Hem,
- Rannveig Nordhagen,
- Per E. Børdahl
30.10.2018:
In 1923, the five-year-old Public Health Association published a folder with ten large-format posters, called House Maxims for Mothers and Children (Figure 1). Their objective was to promote child health through inculcation of a healthy way of life. The folder included an appeal from the...
Augusta Rasmussen – psychiatrist, pioneer and the scientific truths of the time
- Erlend Hem,
- Per E. Børdahl
26.06.2018:
In 1934, senior registrar Augusta Rasmussen (1895–1979) published a study of 77 cases involving sexual offences. She found that the women involved had suffered no mental injury from the abuse. In 1947, she published a study of the intelligence level of 310 Norwegian women who had formed...