Results 51 to 60 of about 3,084 (118)

Evaluating the Test-Negative Design for COVID-19 Vaccine Effectiveness Using Randomized Trial Data: A Secondary Cross-Protocol Analysis of 5 Randomized Clinical Trials.

open access: yesJAMA Netw Open
Andrews LIB   +30 more
europepmc   +1 more source

La posibilidad de una retórica musical hoy

open access: yesRevista Musical Chilena, 1998
Gustavo Becerra-Schmidt
doaj  

Algunas reflexiones motivadas por Cirilo Vila Castro

open access: yesRevista Musical Chilena, 2005
Gustavo Becerra-Schmidt
doaj  

Como recuerdo a Fernando García

open access: yesRevista Musical Chilena, 2003
Gustavo Becerra-Schmidt
doaj  

Hemos leído [PDF]

open access: yes, 1960
Becerra, Gustavo   +2 more
core   +1 more source

Escritos [PDF]

open access: yes, 2011
Santa Cruz Wilson, Domingo
core   +1 more source

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