I would like to know if jonn hopskins,harvard and yale accept 2nd attempt in gre for their MPH PROGRAMS?

I didnt p my GRE exams and i would like to know if john hopskins ,harvard and yale medical colleges accept 2nd attempt in the exams for masters in public health.I WOULD ALSO LIKE TO KNOW OTHER SCHOOLS THAT ACCEPT 2ND attempts.thanks for anticipated cooperation