(2015). Introduction of Inactivated Poliovirus Vaccine and Switch from Trivalent to Bivalent Oral Poliovirus Vaccine — Worldwide, 2013–2016. MMWR Morb Mortal Wkly Rep.
Chicago Style aipamena"Introduction of Inactivated Poliovirus Vaccine and Switch From Trivalent to Bivalent Oral Poliovirus Vaccine — Worldwide, 2013–2016." MMWR Morb Mortal Wkly Rep 2015.
MLA aipamena"Introduction of Inactivated Poliovirus Vaccine and Switch From Trivalent to Bivalent Oral Poliovirus Vaccine — Worldwide, 2013–2016." MMWR Morb Mortal Wkly Rep 2015.
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