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In which country Rh-Factor was discovered?
In which country Sex Hormones was discovered?
In which country Small Pox eradicated was discovered?
In which country Stethoscope was discovered?
In which country Streptomycin was discovered?
In which country Synthetic antigens was discovered?
In which country Terramycin was discovered?
In which country Typhus Vaccine was discovered?
In which country Use of artificial heart (for surgery) was discovered?
In which country Vaccination was discovered?