CNN's "History Refocused" series features surprising and personal stories from America's past to bring depth to conflicts still raging today. (CNN)When she first learned about race correction, Naomi Nkinsi was one of five Black medical students in her class at the University of Washington.Nkinsi remembers the professor talking about an equation doctors use to measure kidney function. The professor said eGFR equations adjust for several variables, including the patient's age, sex and race. When it comes to race, doctors have only two options: Black or "Other." Nkinsi was dumbfounded. "It was...…CNN's "History Refocused" series features surprising and personal stories from America's past to bring depth to conflicts still raging today. (CNN)When she first learned about race correction, Naomi Nkinsi was one of five Black medical students in her class at the University of Washington.Nkinsi remembers the professor talking about an equation doctors use to measure kidney function. The professor said eGFR equations adjust for several variables, including the patient's age, sex and race. When it comes to race, doctors have only two options: Black or "Other." Nkinsi was dumbfounded. "It was...WW…