File:EHR-BBII.jpg
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| Description |
English: DuBose TJ, http://www.obgyn.net/us/us.asp?page=/us/cotm/0001/ehr2000 DuBose TJ, Cunyus JA, & Johnson L; Embryonic Heart Rate and Age. J Diagn Med Sonography 1990; 6:151-157. Schats R, Jansen CAM, & Waldimiroff JW; "Embryonic heart activity: appearance and development in early human pregnancy"; Brit J Obstet and Gynaecol, 1990; 97:989-994. Qasim SM, Sachdev R, Trias A, et al; The predictive value of first trimester embryonic heart rates in fertility patients. Obstetrics & Gynecology. 89(6):934-6, 1997 June; DuBose TJ; FETAL SONOGRAPHY, Chapter 12 Heart Rate; W. B. Saunders Co. 1996; p. 274-263.
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| Date | 7 January 2006 (first version); 30 November 2009 (last version) |
| Source | Transferred from en.wikipedia |
| Author | Original uploader was DuBose at en.wikipedia |
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This work has been released into the public domain by its author, DuBose at the English Wikipedia project. This applies worldwide. In case this is not legally possible: |
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