TY - Generic T1 - "WHO Workshop on Implementation of Guidelines for procedures and data requirements for changes to approved vaccines" Y1 - 2022 A1 - D. Lei A1 - H. Meyer A1 - T. Jivapaisarnpong A1 - L. Tesolin JF - "WHO Workshop on Implementation of Guidelines for procedures and data requirements for changes to approved vaccines" PB - WHO CY - Mascate, Oman sultanate ER -