Natan Bar‐Chama

2.0k total citations
64 papers, 1.1k citations indexed

About

Natan Bar‐Chama is a scholar working on Reproductive Medicine, Molecular Biology and Psychiatry and Mental health. According to data from OpenAlex, Natan Bar‐Chama has authored 64 papers receiving a total of 1.1k indexed citations (citations by other indexed papers that have themselves been cited), including 30 papers in Reproductive Medicine, 16 papers in Molecular Biology and 15 papers in Psychiatry and Mental health. Recurrent topics in Natan Bar‐Chama's work include Sperm and Testicular Function (25 papers), Reproductive Health and Technologies (15 papers) and Sexual function and dysfunction studies (15 papers). Natan Bar‐Chama is often cited by papers focused on Sperm and Testicular Function (25 papers), Reproductive Health and Technologies (15 papers) and Sexual function and dysfunction studies (15 papers). Natan Bar‐Chama collaborates with scholars based in United States, Switzerland and China. Natan Bar‐Chama's co-authors include Harry Fisch, Kelvin P. Davies, Arnold Melman, George J. Christ, Andrew McCullough, Alan B. Copperman, J. Barritt, Richard G. Stock, Jonathan D. Schiff and Jacqueline Moline and has published in prestigious journals such as Journal of Clinical Oncology, Environmental Health Perspectives and The Journal of Urology.

In The Last Decade

Natan Bar‐Chama

59 papers receiving 1.0k citations

Peers — A (Enhanced Table)

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

Name h Career Trend Papers Cites
Natan Bar‐Chama United States 19 458 304 273 211 183 64 1.1k
Bobby B. Najari United States 12 420 0.9× 222 0.7× 332 1.2× 174 0.8× 278 1.5× 48 1.0k
Ramazan Aşçı Türkiye 13 304 0.7× 163 0.5× 218 0.8× 326 1.5× 158 0.9× 56 942
Manuel Gil‐Salom Spain 21 695 1.5× 487 1.6× 278 1.0× 99 0.5× 123 0.7× 45 1.1k
Craig Niederberger United States 17 634 1.4× 367 1.2× 301 1.1× 587 2.8× 456 2.5× 81 1.5k
Ivo Noci Italy 22 866 1.9× 573 1.9× 293 1.1× 71 0.3× 83 0.5× 80 1.6k
Andreas Mueller Germany 27 831 1.8× 724 2.4× 391 1.4× 73 0.3× 294 1.6× 64 1.9k
Masami Takeyama Japan 19 863 1.9× 326 1.1× 561 2.1× 84 0.4× 248 1.4× 85 1.5k
Gideon Sartorius Switzerland 14 393 0.9× 182 0.6× 307 1.1× 78 0.4× 481 2.6× 30 1.2k
C.B. Dhabuwala United States 20 238 0.5× 180 0.6× 124 0.5× 375 1.8× 168 0.9× 49 1.1k
Christoph Keck Germany 23 954 2.1× 571 1.9× 351 1.3× 62 0.3× 232 1.3× 110 1.7k

Countries citing papers authored by Natan Bar‐Chama

Since Specialization
Citations

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

Fields of papers citing papers by Natan Bar‐Chama

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Natan Bar‐Chama. 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 Natan Bar‐Chama. The network helps show where Natan Bar‐Chama may publish in the future.

Co-authorship network of co-authors of Natan Bar‐Chama

This figure shows the co-authorship network connecting the top 25 collaborators of Natan Bar‐Chama. A scholar is included among the top collaborators of Natan Bar‐Chama 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 Natan Bar‐Chama. Natan Bar‐Chama 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.
Bar‐Chama, Natan, et al.. (2024). Male Reproduction in Spinal Muscular Atrophy (SMA) and the Potential Impact of Oral Survival of Motor Neuron 2 (SMN2) Pre-mRNA Splicing Modifiers. Neurology and Therapy. 13(4). 933–947. 3 indexed citations
2.
Hernández-Nieto, Carlos, et al.. (2022). A RETROSPECTIVE ANALYSIS OF CHYMOTRYPSIN USE FOR IVF SPERM PREPARATION AND ITS EFFECTS ON FERTILIZATION, BLASTULATON AND PLOIDY. Fertility and Sterility. 118(4). e144–e144.
3.
Pan, Stephanie, et al.. (2020). MOTIVATIONS OF SPERM DONORS. Fertility and Sterility. 114(3). e268–e269. 1 indexed citations
4.
Hernández-Nieto, Carlos, Joseph A. Lee, Christine Briton-Jones, et al.. (2019). Sedimentation versus surgery: testicular and ejaculated sperm result in similar IVF outcomes in patients with cryptozoospermia. Fertility and Sterility. 112(3). e203–e204. 1 indexed citations
5.
Bar‐Chama, Natan, et al.. (2019). Utilizing the yo® home sperm test novice users obtained accurate results as compared to trained technicians. Fertility and Sterility. 112(3). e63–e63. 2 indexed citations
6.
Hernández-Nieto, Carlos, Joseph A. Lee, Christine Briton-Jones, et al.. (2019). Surgical sperm extraction vs. semen centrifugation: method of spermatozoa recovery does not correlate with euploidy rates in patients with cryptozoospermia. Fertility and Sterility. 112(3). e91–e92. 1 indexed citations
7.
Kim, Edward D., Lindsey E. Crosnoe, Natan Bar‐Chama, Mohit Khera, & Larry I. Lipshultz. (2012). The treatment of hypogonadism in men of reproductive age. Fertility and Sterility. 99(3). 718–724. 55 indexed citations
8.
Bar‐Chama, Natan, Susan M. Snyder, & Louis M. Aledort. (2011). Sexual evaluation and treatment of ageing males with haemophilia. Haemophilia. 17(6). 875–883. 11 indexed citations
9.
Izadyar, F., Chad B. Maki, Thomas Ramos, et al.. (2011). Identification and characterization of repopulating spermatogonial stem cells from the adult human testis. Human Reproduction. 26(6). 1296–1306. 132 indexed citations
10.
Schiff, Jonathan D., et al.. (2010). Sex chromosome micromosaicism in infertile men with normal karyotypes. Fertility and Sterility. 93(6). 1903–1906.
11.
Luna, Martha, J. Barritt, Natan Bar‐Chama, et al.. (2009). Paternal age and assisted reproductive technology outcome in ovum recipients. Fertility and Sterility. 92(5). 1772–1775. 88 indexed citations
12.
Schiff, Jonathan D., Natan Bar‐Chama, Jamie A. Cesaretti, & Richard G. Stock. (2006). Early use of a phosphodiesterase inhibitor after brachytherapy restores and preserves erectile function. British Journal of Urology. 98(6). 1255–1258. 36 indexed citations
13.
Melman, Arnold, Natan Bar‐Chama, Andrew McCullough, Kelvin P. Davies, & George J. Christ. (2005). The First Human Trial for Gene Transfer Therapy for the Treatment of Erectile Dysfunction: Preliminary Results. European Urology. 48(2). 314–318. 53 indexed citations
14.
Moline, Jacqueline, Anne L. Golden, Natan Bar‐Chama, et al.. (2000). Exposure to hazardous substances and male reproductive health: a research framework.. Environmental Health Perspectives. 108(9). 803–813. 97 indexed citations
15.
Golden, Anne L., Jacqueline Moline, & Natan Bar‐Chama. (1999). Male reproduction and environmental and occupational exposures: a review of epidemiologic methods. Salud Pública de México. 41. S93–S105. 19 indexed citations
16.
17.
Herr, H.W., et al.. (1998). Paternity in men with stage I testis tumors on surveillance.. Journal of Clinical Oncology. 16(2). 733–734. 29 indexed citations
18.
Bar‐Chama, Natan, et al.. (1997). Intracavernosal Injection Therapy and Other Treatment Options for Erectile Dysfunction. Endocrine Practice. 3(1). 54–59. 2 indexed citations
19.
Seaman, Eric K., Erik T. Goluboff, Natan Bar‐Chama, & Harry Fisch. (1996). Accuracy of semen counting chambers as determined by the use of latex beads. Fertility and Sterility. 66(4). 662–665. 43 indexed citations
20.
Fisch, Harry, et al.. (1993). Variation in Antisperm Antibody Response Following Transection of Male Genital Tract in Lewis Rats. Archives of Andrology. 30(3). 193–199. 1 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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