Linguistic Differences by Gender in Letters of Recommendation for Maternal-Fetal Medicine Fellowship Applicants.

· Gender bias exists in the evaluation and promotion of women in medicine.. · We sought to determine whether it also exists in letters of recommendation for MFM fellowship.. · Previous studies have examined gender bias in letters of recommendation for other specialties.. · Linguistic bias was detected in letters of recommendation for MFM fellowship from 2019 through 2021.. · We found evidence of linguistic differences based on gender of applicant and letter writers..