The remaining institutions invited to participate in the study were unable to return the completed instruments, which they justified by saying that there were general problems at their universities.
Las demás instituciones invitadas a participar en el estudio fueron incapaces de regresar los instrumentos completos, justificando la existencia de problemas generales en sus universidades.
As demais instituições convidadas a participar no estudo não conseguiram devolver os instrumentos completos, o que justificaram dizendo que houve problemas gerais em suas universidades.