Authorship: According to criteria formulated by the International Committee of Medical Journal Editors (ICMJE), authorship credit should be based on 1) substantial contributions to conception and design, acquisition of data, or analysis and interpretation of data; 2) drafting the article or revising it critically for important intellectual content; and 3) final approval of the version to be published. Authors should meet these 3 criteria. All other contributors who do not meet these criteria for authorship should be noted in the Acknowledgments section.

Conflict-of-Interest Statement: Authors must disclose any commercial or other associations that might pose a conflict of interest in connection with the submitted article. All funding sources supporting the work, and institutional or corporate affiliations of the authors, should be acknowledged in the title page.

Copyright: Authors should submit Copyright Transfer Agreement to the Editorial Office at the time of manuscript submission. This transfer will ensure the widest possible dissemination of information.

Registration of Clinical Trial Research: All clinical trials must be registered in a public registry prior to submission. The journal follows the trials registration policy of the ICMJE (http://www.icmje.org) and considers only trials that have been appropriately registered before submission.

Research and Publication Ethics: All human and animal studies must have been approved by the author's Institutional Review Board (IRB). Copies of written informed consents and IRB approval for clinical research should be kept. Clinical research should be done in accordance of the Ethical Principles for Medical Research Involving Human Subjects, outlined in the Declaration of Helsinki (http://www.wma.net/en/20activities/10ethics/10helsinki/). Clinical studies that do not meet the Declaration of Helsinki will not be considered for publication. Human subjects should not be identifiable, such that patients' names, initials, hospital numbers, dates of birth, or other protected healthcare information should not be disclosed. For animal subjects, research should be performed based on the National or Institutional Guide for the Care and Use of Laboratory Animals, and the ethical treatment of all experimental animals should be maintained.
Selection and description of participants clearly describe the selection of observational or experimental participants (healthy individuals or patients, including controls), including eligibility and exclusion criteria and a description of the source population. Because the relevance of such variables as age, sex, or ethnicity is not always known at the time of study design, researchers should aim for inclusion of representative populations into all study types and at a minimum provide descriptive data for these and other relevant demographic variables. Ensure correct use of the terms sex (when reporting biological factors) and gender (identity, psychosocial or cultural factors), and, unless inappropriate, report the sex and/or gender of study participants, the sex of animals or cells, and describe the methods used to determine sex and gender. If the study was done involving an exclusive population, for example in only one sex, authors should justify why, except in obvious cases (e.g., prostate cancer). Authors should define how they determined race or ethnicity and justify their relevance. Authors should use neutral, precise, and respectful language to describe study participants and avoid the use of terminology that might stigmatize participants.

Originality and Duplicate Publication: All submitted manuscripts should be original and should not be considered by other scientific journals for publication at the same time. Any part of the accepted manuscript should not be duplicated in any other scientific journal.
For the policies on research and publication ethics that are not stated in these instructions, the Good Publication Practice Guidelines for Medical Journals (https://www.kamje.or.kr) or the Guidelines on Good Publication Practice (http://publicationethics.org/files/ u7141/1999pdf13.pdf) can be applied.

Reporting Guidelines for Specific Study Designs: It is recommended for authors to follow the reporting guidelines for the specific study design, such as randomized control study (ie, CONSORT), study of diagnostic accuracy (ie, STARD), meta-analyses and systematic reviews of randomized controlled trials (ie, PRISMA), meta-analyses and systematic reviews of observational studies (ie, MOOSE), and observational studies (ie, STROBE). The details are available on the website at http://www.icmje.org/icmje-recommendations.pdf.

Original Article is a manuscript containing results of clinical, laboratory, or experimental investigations. The article should be organized in the order of Title page, Abstract, Introduction, Materials and Methods, Discussion, Acknowledgments, References, Tables and Figures. Length is limited to 3500 words of body text and 30 references.

Review Article is usually solicited by the Editor-in-Chief. Authors who wish to submit an unsolicited review should contact the Editor-in- Chief. Topics of scientific consensus or remaining controversial may be dealt with in the review. It is organized as Title page, Abstract, Introduction, body text, Conclusion, Acknowledgments, References, Tables and Figures. Length is limited to 250 words of unstructured abstracts, 5000 words of body text, and 150 references.

Editorial is usually written by Editorial Board members. It focuses on the recent hot issues or deals with the articles in the corresponding issue. It may include up to 1200 words and 10 references.

Perspective article covers a wide variety of topics of current hematology- related issues. It may include up to 1200 words, one figure, 2 tables and 10 references.

Letter to the Editor that contains cases or brief communications on interesting topics in hematology may be considered for publication. Comments that concern previously published articles may also be considered, and if necessary, responses by the author of the subject paper may be provided. Letters may be edited by the Editorial Board. The maximum length of a Letter is 1,500 words. Letters should have no more than 6 authors, 3 tables, 2 figures with legends, and 15 references.

Image of Hematology is intended to share an interesting and impressive hematology-related image that has not been submitted or published elsewhere. The title should contain no more than 10 words and the legend should contain no more than 200 words.