 This series of four articles aims to provide novice researchers with practical guidance for conducting high-quality qualitative research in primary care. The first article introduces the series, while the second focuses on context, research questions, and designs. The third article addresses sampling, data collection, and analysis, and this fourth article answers frequently asked questions about trustworthiness and publishing. Quality criteria for all qualitative research include credibility, transferability, dependability, and confirmability, with reflexivity being an integral part of ensuring transparency and quality. Writing a qualitative research article reflects the iterative nature of the process, and editors use criteria such as newness, truth, and relevance when evaluating submissions. An effective cover letter enhances confidence in the studies newness, trueness, and relevance and provides information about how quality criteria were applied or a checklist. This article was authored by Irene Kors-Jens and Albin Moser. We are article.tv, links in the description below.