2025 The impact of imprecise case definitions in electronic health record research: a melanoma case-study from the Million Veteran Program. Lee Wheless†, Dominique Mosley†, Daniel Dochtermann, Saiju Pyarajan, Katlyn Gonzalez, Rachel Weiss, Kyle Maas, Siwei Zhang, Lydia Yao, Yaomin Xu, Christopher Madden, Jacqueline Ike, Isabelle T. Smith, Sarah Grossarth, Otis Wilson, Adriana Hung, Nathanael R. Fillmore, Kevin Brown, Maria Teresa Landi, Rebecca I. Hartman, VA Million Veteran Program† Equal first authorship Archives of Dermatological Research317(1), 308 Electronic Health Records Genome-Wide Association Study Million Veteran Program Cutaneous Melanoma Case Definition Validation