It's easy to fool yourself: Case studies on identifying bias and confounding in bio-medical datasets. - Subhashini Venugopalan; Arunachalam Narayanaswamy; Samuel J. Yang; Anton Gerashcenko; Scott Lipnick; Nina Makhortova; James Hawrot; Christine Marques; João Pereira; Michael P. Brenner; Lee Rubin; Brian Wainger; et al. (CoRR, 2019)