M. Parra

2.2k total citations · 1 hit paper
18 papers, 1.6k citations indexed

About

M. Parra is a scholar working on Obstetrics and Gynecology, Pediatrics, Perinatology and Child Health and Epidemiology. According to data from OpenAlex, M. Parra has authored 18 papers receiving a total of 1.6k indexed citations (citations by other indexed papers that have themselves been cited), including 15 papers in Obstetrics and Gynecology, 10 papers in Pediatrics, Perinatology and Child Health and 4 papers in Epidemiology. Recurrent topics in M. Parra's work include Pregnancy and preeclampsia studies (11 papers), Birth, Development, and Health (5 papers) and Maternal and fetal healthcare (4 papers). M. Parra is often cited by papers focused on Pregnancy and preeclampsia studies (11 papers), Birth, Development, and Health (5 papers) and Maternal and fetal healthcare (4 papers). M. Parra collaborates with scholars based in United Kingdom, Chile and United States. M. Parra's co-authors include K. H. Nicolaides, Ebru Çelik, Mandeep Singh, Eduardo Borges da Fonseca, C. Lees, C. K. H. Yu, Aris T. Papageorghiou, G. Albaigés, H. Muñoz and Ramón Rodrigo and has published in prestigious journals such as New England Journal of Medicine, American Journal of Obstetrics and Gynecology and Pharmacology & Therapeutics.

In The Last Decade

M. Parra

18 papers receiving 1.6k citations

Hit Papers

Progesterone and the Risk of Preterm Birth among Women wi... 2007 2026 2013 2019 2007 200 400 600
What are hit papers?

Hit papers significantly outperform the citation benchmark for their cohort. A paper qualifies if it has ≥500 total citations, achieves ≥1.5× the top-1% citation threshold for papers in the same subfield and year (this is the minimum needed to enter the top 1%, not the average within it), or reaches the top citation threshold in at least one of its specific research topics.

  1. Progesterone and the Risk of Preterm Birth among Women with a Short Cervix
    2007 705 citations Eduardo Borges da Fonseca, Ebru Çelik et al. New England Journal of Medicine profile →

Peers

M. Parra
Antonette T. Dulay United States
Lynn A. Jones United States
Fiona Jordan United Kingdom
Patricia K. Senagore United States
Zeynep Alpay Savasan United States
Moshe Mazor Israel
Manuel Alvarez United States
Elizabeth A. Bonney United States
George Decavalas Greece
Arturo Flores‐Pliego Mexico
Antonette T. Dulay United States
M. Parra
Citations per year, relative to M. Parra M. Parra (= 1×) peers Antonette T. Dulay

Countries citing papers authored by M. Parra

Since Specialization
Citations

This map shows the geographic impact of M. Parra'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 M. Parra with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites M. Parra more than expected).

Fields of papers citing papers by M. Parra

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by M. Parra. 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 M. Parra. The network helps show where M. Parra may publish in the future.

Co-authorship network of co-authors of M. Parra

This figure shows the co-authorship network connecting the top 25 collaborators of M. Parra. A scholar is included among the top collaborators of M. Parra 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 M. Parra. M. Parra is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

18 of 18 papers shown
1.
Illanes, Sebastián E., M. Parra, H. Figueroa, et al.. (2009). Increased free fetal DNA levels in early pregnancy plasma of women who subsequently develop preeclampsia and intrauterine growth restriction. Prenatal Diagnosis. 29(12). 1118–1122. 50 indexed citations
2.
Fonseca, Eduardo Borges da, Ebru Çelik, M. Parra, Mandeep Singh, & K. H. Nicolaides. (2008). Progesterone and the Risk of Preterm Birth Among Women With a Short Cervix. Obstetric Anesthesia Digest. 28(1). 8–8. 72 indexed citations
3.
Fonseca, Eduardo Borges da, Ebru Çelik, M. Parra, Mandeep Singh, & K. H. Nicolaides. (2007). Progesterone and the Risk of Preterm Birth among Women with a Short Cervix. New England Journal of Medicine. 357(5). 462–469. 705 indexed citations breakdown →
4.
Rodrigo, Ramón, et al.. (2005). Pathophysiological basis for the prophylaxis of preeclampsia through early supplementation with antioxidant vitamins. Pharmacology & Therapeutics. 107(2). 177–197. 39 indexed citations
5.
Parra, M., Ramón Rodrigo, P. Barja, et al.. (2005). Screening test for preeclampsia through assessment of uteroplacental blood flow and biochemical markers of oxidative stress and endothelial dysfunction. American Journal of Obstetrics and Gynecology. 193(4). 1486–1491. 108 indexed citations
6.
Yu, C. K. H., et al.. (2004). Randomized, Controlled Trial Using Low-Dose Aspirin in the Prevention of Preeclampsia in Women With Abnormal Uterine Artery Doppler at 23 Weeks Gestation. Obstetrical & Gynecological Survey. 59(3). 174–175. 35 indexed citations
7.
Leite, Júlio César Loguercio, et al.. (2003). Beare‐Stevenson syndrome: Two south american patients with FGFR2 analysis. American Journal of Medical Genetics Part A. 121A(1). 41–46. 22 indexed citations
8.
Yu, C. K. H., et al.. (2003). Randomized controlled trial using low‐dose aspirin in the prevention of pre‐eclampsia in women with abnormal uterine artery Doppler at 23 weeks' gestation. Ultrasound in Obstetrics and Gynecology. 22(3). 233–239. 125 indexed citations
9.
Albaigés, G., Hannah Missfelder‐Lobos, M. Parra, et al.. (2003). Comparison of color Doppler uterine artery indices in a population at high risk for adverse outcome at 24 weeks' gestation. Ultrasound in Obstetrics and Gynecology. 21(2). 170–173. 26 indexed citations
10.
11.
Savvidou, Makrina, C. Lees, M. Parra, Aroon D. Hingorani, & K. H. Nicolaides. (2002). Levels of C‐reactive protein in pregnant women who subsequently develop pre‐eclampsia. BJOG An International Journal of Obstetrics & Gynaecology. 109(3). 297–301. 62 indexed citations
12.
Parra, M., C. Lees, Giovanni E. Mann, Jeremy D. Pearson, & K. H. Nicolaides. (2001). Vasoactive mediator release by fetal endothelial cells in intrauterine growth restriction and preeclampsia. American Journal of Obstetrics and Gynecology. 184(3). 497–502. 21 indexed citations
13.
Lees, C., et al.. (2001). Individualized Risk Assessment for Adverse Pregnancy Outcome by Uterine Artery Doppler at 23 Weeks. Obstetrics and Gynecology. 98(3). 369–373. 10 indexed citations
14.
Albaigés, G., Hannah Missfelder‐Lobos, C. Lees, M. Parra, & K. H. Nicolaides. (2000). One-Stage Screening for Pregnancy Complications by Color Doppler Assessment of the Uterine Arteries at 23 Weeksʼ Gestation. Obstetrics and Gynecology. 96(4). 559–564. 58 indexed citations
15.
Riquelme, Gloria & M. Parra. (1999). Regulation of human placental chloride channel by arachidonic acid and other cis unsaturated fatty acids. American Journal of Obstetrics and Gynecology. 180(2). 469–475. 27 indexed citations
16.
Lees, C., et al.. (1999). Assessment of umbilical arterial and venous flow using color Doppler. Ultrasound in Obstetrics and Gynecology. 14(4). 250–255. 59 indexed citations
17.
Romero, Roberto, H. Muñoz, Ricardo Gómez, et al.. (1996). Increase in prostaglandin bioavailability precedes the onset of human parturition. Prostaglandins Leukotrienes and Essential Fatty Acids. 54(3). 187–191. 109 indexed citations
18.
Romero, Roberto, Jose Nores, M. Mazor, et al.. (1993). Microbial invasion of the amniotic cavity during term labor. Prevalence and clinical significance.. PubMed. 38(7). 543–8. 89 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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