References
- Regan L, Rai R. Epidemiology and the medical causes of miscarriage. Baillieres Best Pract Res Clin Obstet Gynaecol 2000; 14: 839–54
- Hemminki E, Forssas E. Epidemiology of miscarriage and its relation to other reproductive events in Finland. Am J Obst Gynecol 1999; 181: 396–401
- Nybo Andersen AM, Wohlfahrt J, Christens P, Olsen J, Melbye M. Maternal age and fetal loss: population based register linkage study. BMJ 2000; 320: 1708–12
- Selbing A. The pregnant population and fetal crown–rump length screening program. Acta Obstet Gynecol Scand 1983; 62: 161–4
- Cramer DW, Wise LA. The epidemiology of recurrent pregnancy loss. Semin Reprod Med 2000; 18: 331–9
- Leviton A, Cowan L. A review of the literature relating caffeine consumption by women to their risk of reproductive hazards. Food Chem Toxicol 2002; 40: 1271–310
- Oakeshott P, Kerry S, Hay S, Hay P. Bacterial vaginosis and preterm birth: a prospective community-based cohort study. Br J Gen Pract 2004; 54: 119–22
- Odlind V, Haglund B, Pakkanen M, Otterblad Olausson P. Deliveries, mothers and newborn infants in Sweden, 1973–2000. Trends in obstetrics as reported to the Swedish Medical Birth Register. Acta Obstet Gynecol Scand 2003; 82: 516–28
- Cnattingius S, Ericsson A, Gunnarskog J, Källén B. A quality study of a Medical Birth Registry. Scand J Soc Med 1980; 18: 143–8
- Wackerly D, Mendenhall W, Scheaffer R. Mathematical Statistics with Applications. Wadsworth Publishing Company, Belmont, CA 1996
- Khan AS, Khan AR, Khan H. Comparative study of sensitivity and specificity of beta monoclonal agglutination inhibition and sandwich immunometric assay tests in the diagnosis of pregnancy. J Pak Med Assoc 1989; 39: 131–3
- Nielsen S, Hahlin M, Platz-Christensen J. Randomised trial comparing expectant with medical management for first trimester miscarriages. Br J Obstet Gynaecol 1999; 106: 804–7
- Wilcox AJ, Weinberg CR, O'Conner JF, Baird DD, Shlatterer JP, Canfield RE, et al. Incidence of early loss of pregnancy. N Engl J Med 1988; 319: 189–94
- Registration of induced abortions. Epidemiological registers and health statistics. The National Board of Health and Welfare is responsible for three areas of official statistics [Cited 17 March 2005]. Available on WWW at: www.socialstyrelsen.se.