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Kohl, T.; Sharland, G.; Allan, L. D.; Gembruch, U.; Chaoui, R.; Lopes, L. M.; Zielinsky, P.; Huhta, J.; Silverman, N. H. (May 15, 2000). "World experience of percutaneous ultrasound-guided balloon valvuloplasty in human fetuses with severe aortic valve obstruction". The American Journal of Cardiology. 85 (10): 1230–1233. doi:10.1016/s0002-9149(00)00733-5. ISSN0002-9149. PMID10802006.
Johnson, M. P.; Sutton, L. N.; Rintoul, N.; Crombleholme, T. M.; Flake, A. W.; Howell, L. J.; Hedrick, H. L.; Wilson, R. D.; Adzick, N. S. (2003). "Fetal myelomeningocele repair: short-term clinical outcomes". American Journal of Obstetrics and Gynecology. 189 (2): 482–487. doi:10.1067/S0002-9378(03)00295-3. PMID14520222.
Kohl, T.; Sharland, G.; Allan, L. D.; Gembruch, U.; Chaoui, R.; Lopes, L. M.; Zielinsky, P.; Huhta, J.; Silverman, N. H. (May 15, 2000). "World experience of percutaneous ultrasound-guided balloon valvuloplasty in human fetuses with severe aortic valve obstruction". The American Journal of Cardiology. 85 (10): 1230–1233. doi:10.1016/s0002-9149(00)00733-5. ISSN0002-9149. PMID10802006.
Kohl, T.; Sharland, G.; Allan, L. D.; Gembruch, U.; Chaoui, R.; Lopes, L. M.; Zielinsky, P.; Huhta, J.; Silverman, N. H. (May 15, 2000). "World experience of percutaneous ultrasound-guided balloon valvuloplasty in human fetuses with severe aortic valve obstruction". The American Journal of Cardiology. 85 (10): 1230–1233. doi:10.1016/s0002-9149(00)00733-5. ISSN0002-9149. PMID10802006.