Koji Chiba

8PUBLICATIONS
297CO-AUTHORS
Family and household studiesEpidemiological methodsPacific Peoples medicine and treatmentsMortalityRegenerative medicine (incl. stem cells)
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Publications (8)

|Sep 24, 2026
Household Income and Sexual Activity Patterns Among Japanese Men: A Latent Class Analysis of a Nationwide Survey.

|Sep 12, 2025
Prevalence and associated factors of delayed ejaculation: insights from a nationwide internet-based, cross-sectional survey on male sexual dysfunction in Japan.

Masato Shirai, Akira Tsujimura, Shinichiro Fukuhara

|Jun 29, 2025
Prevalence and Factors Associated with Premature Ejaculation in Japan: First Nationwide Cross-Sectional Survey by the Japanese Society for Sexual Medicine.

Masato Shirai, Akira Tsujimura, Shinichiro Fukuhara

|Sep 30, 2024
Erectile Function and Sexual Activity Are Declining in the Younger Generation: Results from a National Survey in Japan.

Akira Tsujimura, Shinichiro Fukuhara, Koji Chiba

|Jun 29, 2023
Does Varicocele Repair Improve Conventional Semen Parameters? A Meta-Analytic Study of Before-After Data.

Rossella Cannarella, Rupin Shah, Taha Abo-Almagd Abdel-Meguid Hamoda

|Apr 29, 2023
Controversy and Consensus on the Management of Elevated Sperm DNA Fragmentation in Male Infertility: A Global Survey, Current Guidelines, and Expert Recommendations.

Ala'a Farkouh, Ashok Agarwal, Taha Abo-Almagd Abdel-Meguid Hamoda

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Frequent Collaborators

7 joint publications

Akira Tsujimura

6 joint publications

Shinichiro Fukuhara

4 joint publications

Widi Atmoko

4 joint publications

Yoshikazu Sato