Sabin, Salk, or sequential?
Hull
H F
HF
World Health Organization, Geneva, Switzerland.
Lee
J W
JW
D006801:Humans; D017589:Immunization Programs; D007115:Immunization Schedule; D011051:Poliomyelitis / Q000517:prevention & control*; D011054:Poliovirus Vaccine, Inactivated; D011055:Poliovirus Vaccine, Oral; D014481:United States; D014492:United States Public Health Service; D014944:World Health Organization
D011054:Poliovirus Vaccine, Inactivated; D011055:Poliovirus Vaccine, Oral