Organizing the manuscript

Impact factor = 1.483

Title page - Title should be 15 words (or less), informative, without subtitles. Give full name and affiliation of each author and the name and mailing address, with fax and phone numbers of the author to whom correspondence and reprint requests are to be sent. Provide a running title of not more than 50 characters. Research support can also be indicated as a footnote to the title.

Abbreviations/acronyms - Avoid if it is possible. If not, list and define them. Use JBC format for standard scientific abbreviations.

Key words - List 3-6 key words (from Index Medicus whenever possible) for indexing.

Abstract/Summary - Do not exceed 250 words for Articles, Reports and Seminars, 150 words for Short Communications and Case Reports. State briefly the aims of the study, the main question(s) and approach(es) as well as the most important results and conclusions. The abstract should be informative without reference to the manuscript.

Introduction - Provides background data which stimulated and/or initiated the study. The most relevant results from the literature should be summarized.

Materials and Methods - Should be sufficiently detailed in order to be repeated by other researchers.

Results - All important results should be given here avoiding repetition of data in the text and in the tables/figures. "Significant" is used only when results are statistically significant (P-value or confidence interval).

Discussion - Serves to interpret the results without repeating. There is no need for separate discussion in Short Communications or Case Reports.

Reference - References must be numbered and arranged according to the first citation in the text. The following formats must be used:

for periodicals
1. Boom H, Bim GH, Bam D: Do not take yourself too seriously. Phantasy 1: 1-9, 1996

for books
2. Boom H: Do not take yourself too seriously. Phantasy Publ Co, NewYork-London-Budapest, 1996

for articles in books
3. Boom H: Do not take yourself too seriously. In: Who is who and why. (Eds: Bim GH and Bam D), Phantasy Publ Co, 1996, pp. 1-9

In the text references should be cited by numbers in superscript or – if it is absolutely necessary – by the author's name with numbers (also in superscript). E.g. Boom1 or Boom and Bam4 or Boom et al.5
"In press" can be used (in place of volume and page number) only for papers by the author(s) that have been accepted for publication.
Cite submitted papers and unpublished data in the text only (but only when it is unavoidable).

Tables, Figures and their Legends - Should stand alone, be self-explanatory. Tables should be numbered consecutively (e.g. Table 3). Type tables double-spaced with titles and legends (footnote), and headings for columns. Figures (photographs, drawings, graphics) should be numbered consecutively (Fig 3 – to separate different parts of the figure/panel use capital letters). The preferred character font is Times. For computer printouts use laser or inkjet printers, but not dot-matrix. Three sets of each of the figures should be submitted. The back of each figure should show the authors name, the figure number and "top" of the figure should be indicated. Photographs should be clear, glossy prints (do not send negatives or figures on disk). For artwork use black ink. High quality color photos and illustrations are accepted without charge. Each color material (three sets) should be accompanied by one high quality positive slide. Figures should be sized to fit one columns (8 cm) or two column (16.7 cm); the maximum plate size is 16.7 cm x 23.7 cm. Use separate page for Legend to Figure(s).

Typescript - Manuscript should be double spaced, pages numbered consecutively with new pages for each section (Title page is page 1).
POR uses Webster's New Collegiate Dictionary as the standard for spelling.
Units should satisfy International System of Units (SI).
Specific products and companies should be identified to ensure exact recognition.

Proofs - The Publisher sends a set of page proofs to the corresponding author. Authors should check the proofs carefully according to the attached instructions and return the original proof within 48 hours (e.g. by surface mail).