Nancy A. Callan

517 total citations
22 papers, 380 citations indexed

About

Nancy A. Callan is a scholar working on Epidemiology, Surgery and Pediatrics, Perinatology and Child Health. According to data from OpenAlex, Nancy A. Callan has authored 22 papers receiving a total of 380 indexed citations (citations by other indexed papers that have themselves been cited), including 8 papers in Epidemiology, 7 papers in Surgery and 6 papers in Pediatrics, Perinatology and Child Health. Recurrent topics in Nancy A. Callan's work include Congenital Heart Disease Studies (6 papers), Cardiovascular Issues in Pregnancy (5 papers) and Platelet Disorders and Treatments (4 papers). Nancy A. Callan is often cited by papers focused on Congenital Heart Disease Studies (6 papers), Cardiovascular Issues in Pregnancy (5 papers) and Platelet Disorders and Treatments (4 papers). Nancy A. Callan collaborates with scholars based in United States and United Kingdom. Nancy A. Callan's co-authors include Karin J. Blakemore, Anthony Sciscione, Stuart Weiner, Garrett H. C. Colmorgen, Thomas S. Kickler, Jean S. Kan, Vinod K. Bhutani, Ronald J. Bolognese, Anthony Johnson and Roger C. Sanders and has published in prestigious journals such as American Journal of Obstetrics and Gynecology, Obstetrics and Gynecology and BJOG An International Journal of Obstetrics & Gynaecology.

In The Last Decade

Nancy A. Callan

21 papers receiving 361 citations

Peers

Nancy A. Callan

PPCH

SURGE

PRM

EPIDE

HEMAT

Neil Pattison New Zealand

T. Somville Germany

Mauro Schenone United States

G. Constantine United Kingdom

R.-C. Rudigoz France

Phudit Jatavan Thailand

Frigoletto Fd United States

C. Coulon France

H Nagel Netherlands

Tanja Kersnik Levart Slovenia

Neil Pattison New Zealand

Nancy A. Callan

137 ×0.9

PPCH

70 ×0.6

SURGE

29 ×0.3

PRM

38 ×0.4

EPIDE

200 ×2.5

HEMAT

Citations per year, relative to Nancy A. Callan Nancy A. Callan (= 1×) peers Neil Pattison

Countries citing papers authored by Nancy A. Callan

Since Specialization

Citations

This map shows the geographic impact of Nancy A. Callan's research. It shows the number of citations coming from papers published by authors working in each country. You can also color the map by specialization and compare the number of citations received by Nancy A. Callan with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Nancy A. Callan more than expected).

Fields of papers citing papers by Nancy A. Callan

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Nancy A. Callan. Nodes represent research fields, and links connect fields that are likely to share authors. Colored nodes show fields that tend to cite the papers produced by Nancy A. Callan. The network helps show where Nancy A. Callan may publish in the future.

Co-authorship network of co-authors of Nancy A. Callan

This figure shows the co-authorship network connecting the top 25 collaborators of Nancy A. Callan. A scholar is included among the top collaborators of Nancy A. Callan based on the total number of citations received by their joint publications. Widths of edges represent the number of papers authors have co-authored together. Node borders signify the number of papers an author published with Nancy A. Callan. Nancy A. Callan is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

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20 of 20 papers shown

Pressman, Eva K., et al.. (2000). Prediction of Birth Weight by Ultrasound in the Third Trimester. Obstetrics and Gynecology. 95(4). 502–506. 14 indexed citations

Sciscione, Anthony, Hagop Bessos, Nancy A. Callan, Karin J. Blakemore, & Thomas S. Kickler. (1997). Indicators of platelet turnover in thrombocytopenic infants. BJOG An International Journal of Obstetrics & Gynaecology. 104(6). 743–745. 9 indexed citations

King, Karen E., Kuo-Jang Kao, Paul F. Bray, et al.. (1996). The role of HLA antibodies in neonatal thrombocytopenia: a prospective study. Tissue Antigens. 47(3). 206–211. 53 indexed citations

Kickler, Thomas S., Paul F. Bray, Nancy A. Callan, et al.. (1995). Molecular genotyping of fetal platelet antigens with uncultured amniocytes. American Journal of Obstetrics and Gynecology. 173(4). 1202–1206. 8 indexed citations

Strobino, Donna M., Richard G. Frank, Richard H. Shachtman, et al.. (1993). Development of an Index of Maternal Transport. Medical Decision Making. 13(1). 64–73. 4 indexed citations

Wax, Joseph R., et al.. (1993). Effect of fetal movement on the amniotic fluid index. American Journal of Obstetrics and Gynecology. 168(1). 188–189. 11 indexed citations

Rossiter, Judith Pratt & Nancy A. Callan. (1993). PRENATAL DIAGNOSIS OF CONGENITAL HEART DISEASE. Obstetrics and Gynecology Clinics of North America. 20(3). 485–496. 6 indexed citations

Wax, Joseph R., et al.. (1992). The Stuck Twin Phenomenon: Experience with Serial Therapeutic Amniocentesis. The Journal of Maternal-Fetal & Neonatal Medicine. 1(5). 239–244.

Callan, Nancy A., et al.. (1991). Counseling in Congenital Heart Defects. Obstetrical & Gynecological Survey. 46(10). 651–655. 7 indexed citations

10.

Callan, Nancy A., et al.. (1991). Fetal Echocardiography: Indications for Referral, Prenatal Diagnoses, and Outcomes. American Journal of Perinatology. 8(6). 390–394. 23 indexed citations

11.

Wax, Joseph R., et al.. (1991). Stuck Twin with Cotwin Nonimmune Hydrops: Successful Treatment by Amniocentesis. Fetal Diagnosis and Therapy. 6(3-4). 126–131. 28 indexed citations

12.

Callan, Nancy A. & Jean S. Kan. (1991). Prenatal Diagnosis of Tetralogy of Fallot with Absent Pulmonary Valve. American Journal of Perinatology. 8(1). 15–17. 12 indexed citations

13.

Callan, Nancy A.. (1991). Fetal echocardiography. Current Opinion in Obstetrics & Gynecology. 3(2). 255–258. 2 indexed citations

14.

Callan, Nancy A. & Frank R. Witter. (1990). Intrauterine growth retardation: characteristics, risk factors and gestational age. International Journal of Gynecology & Obstetrics. 33(3). 215–220. 13 indexed citations

15.

Callan, Nancy A., Karin J. Blakemore, Jung Wook Park, et al.. (1990). Fetal Genitourinary Tract Anomalies: Evaluation, Operative Correction, and Follow-up. Journal of diagnostic medical sonography. 6(3). 180–181. 10 indexed citations

16.

Kuller, J A, et al.. (1988). Obstetric management of a fetus with nonlethal osteogenesis imperfecta.. PubMed. 72(3 Pt 2). 477–9. 8 indexed citations

17.

Johnson, Anthony, Nancy A. Callan, Vinod K. Bhutani, et al.. (1987). Ultrasonic ratio of fetal thoracic to abdominal circumference: An association with fetal pulmonary hypoplasia. American Journal of Obstetrics and Gynecology. 157(3). 764–769. 63 indexed citations

18.

Shirey, R. Sue, Paul M. Ness, Thomas S. Kickler, et al.. (1987). The association of anti‐P and early abortion. Transfusion. 27(2). 189–191. 21 indexed citations

19.

Callan, Nancy A., Garrett H. C. Colmorgen, & Stuart Weiner. (1985). Lung hypoplasia and prolonged preterm ruptured membranes: A case report with implications for possible prenatal ultrasonic diagnosis. American Journal of Obstetrics and Gynecology. 151(6). 756–757. 15 indexed citations

20.

Callan, Nancy A., et al.. (1985). The first-trimester ultrasonographic diagnosis of conjoined twins. American Journal of Obstetrics and Gynecology. 152(7). 833–835. 34 indexed citations

Rankless uses publication and citation data sourced from OpenAlex, an open and comprehensive bibliographic database. While OpenAlex provides broad and valuable coverage of the global research landscape, it—like all bibliographic datasets—has inherent limitations. These include incomplete records, variations in author disambiguation, differences in journal indexing, and delays in data updates. As a result, some metrics and network relationships displayed in Rankless may not fully capture the entirety of a scholar's output or impact.

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