Background: Preprints—scientific manuscripts shared publicly prior to formal peer review—are gaining momentum across academic disciplines. However, their adoption in clinical and biomedical sciences remains limited, particularly in countries where traditional publishing norms prevail. Editorial ambiguity and a lack of national policy further complicate their use. Objective: This study aimed to assess the awareness, experiences, and attitudes of medical academics at Marmara University School of Medicine toward preprints and to explore the editorial landscape through both journal editor feedback and a review of journal-level preprint policies. Methods: A cross-sectional survey was conducted with 103 medical faculty members. The questionnaire included demographic questions, Likert scale items, and multiple-choice items assessing knowledge, familiarity, and attitudes toward preprints, as well as open-ended items to explore concerns. A “preprint test score” (0‐4) was developed to quantify objective knowledge. Subgroup analyses were conducted by age (<40 vs ≥40 y) and academic discipline (basic vs clinical sciences). Additionally, all responses to open-ended questions from journal editors and 118 biomedical journals were manually reviewed for their stated stance on preprints and article processing charges (APCs). A convergent mixed methods design was used, combining a structured survey, thematic analysis of open-ended responses and editorial feedback, and a document-based review of biomedical journal policies. Results: Only 42.9% (n=34) of participants reported familiarity with the concept of preprints, and 13% (n=10) had previously published on a preprint server. Misconceptions about ethics, peer review, and compatibility with journal policies were common. Subgroup analysis revealed that older participants scored higher on the “preprint test” (mean 2.20, SD 1.31 vs mean 1.97, SD 1.60) and had more experience with preprint publishing (1/40, 2.5% of younger participants; 7/29, 24.1% of older participants). Further, younger academics expressed less openness toward future use (n=7, 17.5% in the younger group; n=8, 27.6% in the older group). Clinical faculty were generally more hesitant than basic science faculty, although both groups raised concerns about the academic recognition of preprints. Editorial responses reflected a mix of cautious endorsement and skepticism. Among the 118 biomedical journals reviewed, most lacked clear preprint policies, while a small number either explicitly prohibited or permitted them. Conclusions: There is limited awareness and cautious engagement with preprints among medical academics and editors in Türkiye. Generational and discipline-based differences further influence knowledge and attitudes. The lack of clear editorial guidance from biomedical journals may reinforce academic uncertainty. Tailored educational initiatives, transparent journal policies, and institutional support will be essential to foster a more open and inclusive scientific publishing environment.

Measurement of pectus carinatum is usually made using pressure units (pressure of correction). Some potential problems with their methodology may be causing inconsistent results. In this paper we discuss potential problems regarding the use of pressure units in pectus carinatum measurement and why force units (force of correction) should be used instead.

Objective: This study aimed to investigate the relationship between physical activity and self-esteem of high school students and contribute the literature from a different sociocultural area. Methods: In this descriptive study, whole population of 10 ^th and 11 ^th grade of Capa Science High School (Istanbul/Türkiye) students are invited to study. Voluntarily participating students were asked to answer the questions written on standard survey paper, under the observation of researchers. Survey papers included sociodemographic answers as well as Short Form of International Physical Activity Questionnaire to evaluate physical activity levels and Rosenberg Self-esteem Scale to evaluate self-esteem. IBM SPSS Statistics (Version 11) were used to analyse data. Level of p<0.05 was accepted as statistical significance. Results: Data of 225 persons were succesfully collected (n=278, 80.93%). 16 persons’ data was excluded from physical activity related analyses due to incomplete answers. The 71.60% (n=161) of participants were male, 27.60% (n=62) were female and rest (n=2) did not want to express their genders. Males reported higher self-esteem (p=0.002) and higher physical activity (p=0.031) than females. Self-esteem was associated with regular exercise (p=0.034) status and self-evaluted school success (p=0.001). Self-esteem correlated with participants’ height (p=0.029, r=0.146). Finally, positive correlation between self-esteem and physical activity was found. (p=0.045, r=0.140). Conclusion: Physical activity and self-esteem was correlated with each other in this study. Potential causational relation and underlying mechanisms should be investigated.

Objective: To analyse the 24 years of Marmara Student Congress (MaSCo) and its internal dynamics and reveal the statistics of presented studies.Materials and Methods: Congress booklets were obtained from the website of MaSCo, all of the booklets were read by researchers from the year 2001 to 2024. Presentation types, subjects and origins of studies; workshop numbers, participants’ numbers and origins were evaluated. Results: In 24 years, 23 MaSCo took place. MaSCo 2020 did not take place due to COVID pandemic. 2299 internal, 129 external, 43 studies from EMU; in total 2471 studies were presented. At least 427 workshops and 117 panels/conferences were held. 10520 internal student researchers, 219 EMU student researchers, 486 external student researchers in total 11225 student researchers were welcomed in MaSCo. Ratio of biomedical studies among all studies, animal studies and cell studies show increase throughout years whereas studies from external origins and workshops per participant show decrease. Oral presentation ratio fluctuates between approximately 25 to 50%.Conclusion: MaSCo as the first medical student congress of Türkiye continues its activities for 24 years successfully.