The Convoluted Tubules of the Nephron Must Be Considered Elliptical, and Not Circular, in Stereological Studies of the Kidney. - Ortega-Martinez, Marta; Gutierrez-Davila, Vanessa; Gutierrez-Arenas, Esthefania; Niderhauser-Garcia, Alberto; Cerda-Flores, Ricardo M.; Jaramillo-Rangel, Gilberto (Kidney & Blood Pressure Research, 2021)