[1] Wake Forest Sch Med, Med Ctr, Dept Emergency Med, 1 Winston Salem, Boulevard, NC 27157 USA
[2] Wake Forest Sch Med, Dept Neurol, Med Ctr, 1 Winston Salem, Boulevard, NC 27157 USA
[3] Wake Forest Sch Med, Med Ctr, Dept Obstet & Gynecol, 1 Winston Salem, Boulevard, NC 27157 USA
[4] Wake Forest Sch Med, Dept Med Educ, Med Ctr, 1 Winston Salem, Boulevard, NC 27157 USA