Hiroshi Koyama

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ORCID

Inclusion identifies researchers whose recorded research contributions may inform their university’s understanding of its research community. It does not rank individual research quality or establish current employment.

Selected research works

Up to 100 highly cited works; DOI links open the original research. Counts reflect the collected record, not real-time citation totals.

1. Polychemotherapy for early breast cancer: an overview of the randomised trials. Early Breast Cancer Trialists' Collaborative Group.

   1998 · 2,146 citations

2. Effect of Lung-Volume–Reduction Surgery in Patients with Severe Emphysema

   2000 · 399 citations

3. Comparison of Discriminative Properties among Disease-specific Questionnaires for Measuring Health-related Quality of Life in Patients with Chronic Obstructive Pulmonary Disease

   1998 · 265 citations

4. Analysis of Clinical Methods Used to Evaluate Dyspnea in Patients with Chronic Obstructive Pulmonary Disease

   1998 · 255 citations

5. Guidelines for Management of Idiopathic Normal Pressure Hydrocephalus Guidelines From the Guidelines Committee of Idiopathic Normal Pressure Hydrocephalus, the Japanese Society of Normal Pressure Hydrocephalus

   2008 · 251 citations

6. Chemical forms of selenium for cancer prevention

   2005 · 185 citations

7. Hyaluronan Deficiency in Tumor Stroma Impairs Macrophage Trafficking and Tumor Neovascularization

   2010 · 185 citations

8. Detection of breast cancer micrometastases in axillary lymph nodes by means of reverse transcriptase-polymerase chain reaction. Comparison between MUC1 mRNA and keratin 19 mRNA amplification.

   1996 · 182 citations

9. Characteristics of a community-based distribution of home blood pressure in Ohasama in northern Japan

   1993 · 173 citations

10. Hyperproduction of Hyaluronan in Neu-Induced Mammary Tumor Accelerates Angiogenesis through Stromal Cell Recruitment

    2007 · 171 citations

11. Diagnostic value of adenosine deaminase in tuberculous pleural effusion: a meta-analysis

    2003 · 145 citations

12. Kaempferol-3-O-rhamnoside isolated from the leaves of Schima wallichii Korth. inhibits MCF-7 breast cancer cell proliferation through activation of the caspase cascade pathway

    2012 · 136 citations

13. Knowledge, Attitude, and Practice During the COVID-19 Pandemic: A Review

    2020 · 133 citations

14. Significance of Tumor-Associated Stroma in Promotion of Intratumoral Lymphangiogenesis

    2007 · 116 citations

15. Multimodality therapeutic outcomes In anaplastic thyroid carcinoma: Improved survival in subgroups of patients with localized primary tumors

    2011 · 115 citations

16. A Novel, Short, and Simple Questionnaire to Measure Health-related Quality of Life in Patients with Chronic Obstructive Pulmonary Disease

    1999 · 111 citations

17. Perspectives on Cadmium Toxicity Research.

    2002 · 104 citations

18. Physiologic Factors That Determine the Health-Related Quality of Life in Patients with COPD

    1996 · 103 citations

19. Health status and lifestyle factors as predictors of depression in middle-aged and elderly Japanese adults: a seven-year follow-up of the Komo-Ise cohort study

    2011 · 103 citations

20. Medical student abuse during clinical clerkships in Japan

    2005 · 94 citations

21. Separation of Selenium-Containing Proteins in Human and Mouse Plasma Using Tandem High-Performance Liquid Chromatography Columns Coupled with Inductively Coupled Plasma-Mass Spectrometry

    1999 · 92 citations

22. Optimal Cutoff Level of Breath Carbon Monoxide for Assessing Smoking Status in Patients With Asthma and COPD *

    2003 · 87 citations

23. CD36 is indispensable for thermogenesis under conditions of fasting and cold stress

    2015 · 79 citations

24. Perceived Health as Related to Income, Socio-economic Status, Lifestyle, and Social Support Factors in a Middle-aged Japanese

    2005 · 70 citations

25. Impact of Impaired Renal Function on Gadolinium Retention After Administration of Gadolinium-Based Contrast Agents in a Mouse Model

    2016 · 68 citations

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