References
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- Söderberg G., Westin B. Studier av buktryckets transmission till vagina och cervix under förlossning. Nord Med 1968; 79: 493
- Söderberg G., Westin B. Pressures at rest and during coughing in the bladder, the uterus and the vagina at the onset of labour. Acta Obstet Gynec Scand 1969; 48, Suppl. 9