References
- Alkner R., Hennings R., Hjelm M., Michaelsson G., Walan A. Prognosen vid abortus imminens. Nord Med 1960; 63: 261
- Asanti R., Vesanto T. Effect of threatened abortion on foetal prognosis. Acta Obstet Gynecol Scand 1964; 42: 107
- Campbell S. The prediction of fetal maturity by ultrasonic measurement of the biparietal diameter. J Obstet Gynaecol Br Commonw 1969; 76: 603
- Donald I., Morley P., Barnett E. The diagnosis of blighted ovum by sonar. J Obstet Gynaecol Br Commonw 1972; 79: 304
- Hackelöer B.-J., Hansmann M. Ultraschalldiagnostik in der Frühschwangerschaft. Gynäkologe 1976; 9: 108
- Hansmann M. Ultraschallbiometrie im II. and III. Trimester der Schwangerschaft. Gynäkologe 1976; 9: 133
- Hollstein K. Das Schicksal der Frucht nach drohendem Abortus. Zentralbl Gynaekol 1958; 80: 16
- Johannsen A. The prognosis of threatened abortion. Acta Obstet Gynecol Scand 1970; 49: 89
- Jouppila P. Ultrasound in the diagnosis of early pregnancy and its complications. Acta Obstet Gynecol Scand Suppl 1971; 15
- Jouppila P., Koivisto M. The prognosis in pregnancy after threatened abortion. Ann Chir Gynaecol Fenn 1974; 63: 439
- Knörr K. Missbildungen und Entwicklungsstörungen nach Blutungen in der Frühschwangerschaft. Geburtshilfe Frauenheilkd 1958; 27: 461
- Lauritsen J. G. Aetiology of spontaneous abortion. Acta Obstet Gynecol Scand Suppl 1976; 52
- Mau G., Netter P. Die Bedeutung von Blutungen in der Frühschwangerschaft für das Kind. Dtsch Med Wochenschr 1972; 30: 1119
- Persson P.-H., Grennert L. Övervakning av graviditet med ultraljud. XX Nordic Congress of Obstetrics and Gynaecology. Bergen 1978; 117, Abstract book
- Piiroinen O. Detection of fetal heart activity during early pregnancy by combined B-scan and Doppler examination: a new application. Acta Obstet Gynecol Scand 1974; 53: 231
- Piiroinen O. Studies in diagnostic ultrasound. Acta Obstet Gynecol Scand Suppl 1975; 46
- Robinson H. P. Detection of fetal heart movement in first trimester of pregnancy using pulsed ultrasound. Br Med J 1972; 4: 466
- Robinson H. P. Sonar measurement of fetal crown-rump length as means of assessing maturity in first trimester of pregnancy. Br Med J 1973; 4: 28
- Robinson H. P. Gestation sac volumes as determined by sonar in the first trimester of pregnancy. Br J Obstet Gynaecol 1975; 82: 100
- Robinson H. P. The diagnosis of early pregnancy failure by sonar. Br J Obstet Gynaecol 1975; 82: 849
- Tosetti K. Blutungen in der Frühschwangerschaft. Geburtshilfe Frauenheilkd 1960; 20: 513
- Turnbull E. P. N., Walker J. The outcome of pregnancy complicated by threatened abortion. J Obstet Gynaecol Br Emp 1956; 63: 553