Pirkko Ämmälä

1.1k total citations
46 papers, 857 citations indexed

About

Pirkko Ämmälä is a scholar working on Pediatrics, Perinatology and Child Health, Epidemiology and Genetics. According to data from OpenAlex, Pirkko Ämmälä has authored 46 papers receiving a total of 857 indexed citations (citations by other indexed papers that have themselves been cited), including 18 papers in Pediatrics, Perinatology and Child Health, 12 papers in Epidemiology and 10 papers in Genetics. Recurrent topics in Pirkko Ämmälä's work include Neonatal and fetal brain pathology (9 papers), Prenatal Screening and Diagnostics (7 papers) and Pregnancy and preeclampsia studies (6 papers). Pirkko Ämmälä is often cited by papers focused on Neonatal and fetal brain pathology (9 papers), Prenatal Screening and Diagnostics (7 papers) and Pregnancy and preeclampsia studies (6 papers). Pirkko Ämmälä collaborates with scholars based in Finland, United States and Australia. Pirkko Ämmälä's co-authors include V. Kariniemi, Marjaleena Koskiniemi, Kari Teramo, Harriet von Koskull, Vilho Hiilesmaa, Pentti Koskela, Juhani Rapola, Klaus Hedman, Maija Lappalainen and Riitta Salonen and has published in prestigious journals such as American Journal of Obstetrics and Gynecology, International Journal of Epidemiology and Human Reproduction.

In The Last Decade

Pirkko Ämmälä

46 papers receiving 797 citations

Peers — A (Enhanced Table)

Peers by citation overlap · career bar shows stage (early→late) cites · hero ref

Name h Career Trend Papers Cites
Pirkko Ämmälä Finland 20 230 222 168 147 125 46 857
David M. Judge United States 18 142 0.6× 140 0.6× 64 0.4× 157 1.1× 61 0.5× 29 839
Léon Boubli France 20 225 1.0× 522 2.4× 65 0.4× 118 0.8× 47 0.4× 62 1.3k
Daniel Rukavina Croatia 28 449 2.0× 82 0.4× 41 0.2× 162 1.1× 63 0.5× 114 2.5k
A. Constantopoulos Greece 16 313 1.4× 96 0.4× 30 0.2× 103 0.7× 44 0.4× 41 758
W. C. Marshall United Kingdom 19 441 1.9× 64 0.3× 27 0.2× 71 0.5× 68 0.5× 69 952
Christina Ekerfelt Sweden 23 93 0.4× 203 0.9× 421 2.5× 76 0.5× 49 0.4× 43 1.6k
Barbara H. McClellan United States 9 118 0.5× 84 0.4× 21 0.1× 109 0.7× 156 1.2× 11 935
Margaret A. Menser Australia 17 301 1.3× 55 0.2× 25 0.1× 67 0.5× 261 2.1× 44 822
Cláudia Augusta Zago Brazil 9 219 1.0× 50 0.2× 33 0.2× 51 0.3× 64 0.5× 10 855
Ferah Genel Türkiye 16 227 1.0× 51 0.2× 22 0.1× 152 1.0× 191 1.5× 87 1.1k

Countries citing papers authored by Pirkko Ämmälä

Since Specialization
Citations

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

Fields of papers citing papers by Pirkko Ämmälä

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of Pirkko Ämmälä

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

All Works

20 of 20 papers shown
1.
Lehtovirta, P, Kirsi Skogberg, Eeva Salo, et al.. (2005). Pregnancy outcome among HIV‐infected women in the Helsinki metropolitan area. Acta Obstetricia Et Gynecologica Scandinavica. 84(10). 945–950. 8 indexed citations
2.
Koskiniemi, Marjaleena, et al.. (2001). Chlamydia trachomatis infection in mothers with preterm delivery and in their newborn infantsNote. Apmis. 109(9). 636–640. 20 indexed citations
3.
Koskiniemi, Marjaleena, Pirkko Ämmälä, Vineta Fellman, et al.. (2000). Chlamydia trachomatis seropositivity is associated both with stillbirth and preterm delivery. Apmis. 108(9). 584–588. 53 indexed citations
4.
Salonen, Riitta & Pirkko Ämmälä. (1997). Prenatal diagnosis in Finland.. PubMed. 5 Suppl 1. 22–5. 2 indexed citations
5.
Salonen, Riitta, Ursula Turpeinen, Pirkko Ämmälä, et al.. (1997). Maternal serum screening for Down's syndrome on population basis. Acta Obstetricia Et Gynecologica Scandinavica. 76(9). 817–821. 14 indexed citations
6.
Koskiniemi, Marjaleena, Pirkko Ämmälä, Ale Närvänen, et al.. (1996). Stillbirths and maternal antibodies to Chlamydia trachomatis. A new EIA test for serology. Acta Obstetricia Et Gynecologica Scandinavica. 75(7). 657–661. 5 indexed citations
7.
Lappalainen, Maija, Marjaleena Koskiniemi, Vilho Hiilesmaa, et al.. (1995). Outcome of children after maternal primary Toxoplasma infection during pregnancy with emphasis on avidity of specific IgG. The Pediatric Infectious Disease Journal. 14(5). 354–361. 61 indexed citations
8.
Ämmälä, Pirkko, et al.. (1995). First‐trimester diagnosis of hydrolethalus syndrome. Ultrasound in Obstetrics and Gynecology. 5(1). 60–62. 19 indexed citations
9.
Ämmälä, Pirkko, et al.. (1993). Randomized trial comparing first‐trimester transcervical chorionic villus sampling and second‐trimester amniocentesis. Prenatal Diagnosis. 13(10). 919–927. 31 indexed citations
10.
Kaaja, Risto, Heikki Julkunen, Pirkko Ämmälä, Pekka Kurki, & Saija Koskimies. (1993). Congenital heart block in one of the HLA identical twins. European Journal of Obstetrics & Gynecology and Reproductive Biology. 51(1). 78–80. 13 indexed citations
11.
Kaaja, Risto, Heikki Julkunen, Pirkko Ämmälä, Timo Palosuo, & Pekka Kurki. (1993). Intravenous immunoglobulin treatment of Dregnant patients with recurrent pregnancy osses associated with antiphospholipid antibodies. Acta Obstetricia Et Gynecologica Scandinavica. 72(1). 63–66. 56 indexed citations
12.
Lappalainen, Maija, Pentti Koskela, Klaus Hedman, et al.. (1992). Incidence of Primary Toxoplasma Infections during Pregnancy in Southern Finland: A Prospective Cohort Study. Scandinavian Journal of Infectious Diseases. 24(1). 97–104. 52 indexed citations
13.
Järvelä, Irma, Juhani Rapola, Leena Peltonen, et al.. (1991). DNA‐based prenatal diagnosis of the infantile form of neuronal ceroid lipofuscinosis (INCL, CLN1). Prenatal Diagnosis. 11(5). 323–328. 23 indexed citations
14.
Kaaja, Risto, Heikki Julkunen, Pirkko Ämmälä, Anna‐Maija Teppo, & Pekka Kurki. (1991). Congenital heart block: Successful prophylactic treatment with intravenous gamma globulin and corticosteroid therapy. American Journal of Obstetrics and Gynecology. 165(5). 1333–1334. 19 indexed citations
15.
Kaaja, Risto, Heikki Julkunen, & Pirkko Ämmälä. (1990). Hypertension as a Risk Factor in Pregnancies Complicated by Systemic Lupus Erythematosus. Acta Obstetricia Et Gynecologica Scandinavica. 69(5). 393–396. 4 indexed citations
16.
Aula, P, et al.. (1989). First‐trimester prenatal diagnosis of aspartylglucosaminuria. Prenatal Diagnosis. 9(9). 617–620. 8 indexed citations
17.
Koskull, Harriet von, et al.. (1989). Trisomy 12 mosaicism in amniocytes and dysmorphic child despite normal chromosomes in fetal blood sample. Prenatal Diagnosis. 9(6). 433–437. 35 indexed citations
18.
Aula, Perttì, Juhani Rapola, Harriet von Koskull, & Pirkko Ämmälä. (1984). Prenatal diagnosis and fetal pathology of aspartylglucosaminuria. American Journal of Medical Genetics. 19(2). 359–367. 14 indexed citations
19.
Kariniemi, V., M Forss, Rita Siegberg, & Pirkko Ämmälä. (1983). Reduced short-term variability of fetal heart rate in association with maternal hyperglycemia during pregnancy in insulin-dependent diabetic women. American Journal of Obstetrics and Gynecology. 147(7). 793–794. 8 indexed citations
20.
Teramo, Kari, et al.. (1983). Pathologic fetal heart rate associated with poor metabolic control in diabetic pregnancies.. PubMed. 61(5). 559–65. 28 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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