Eight randomized controlled trials fulfilled the inclusion criteria for this review.
Of the four randomized controlled trials found only one had useable data.
Larger randomized controlled trials are needed.
However, the different surgical techniques have not been directly compared in randomized controlled trials.
Prospective data of two randomized controlled trials reported the incidence of hypothyroidism.
The best overview of the research in this area is provided in a meta-analysis of randomized controlled trials.
Fortunately, we have several randomized controlled trials on glucomannan.
Afortunadamente, tenemos varios ensayos controlados aleatorios sobre el glucomanano.
The nature of the intervention precludes randomized controlled trials.
La naturaleza de la intervención excluye los ensayos controlados aleatorios.
These hypotheses can be tested in randomized controlled trials.
Estas hipótesis pueden probarse con la implementación de ensayos controlados aleatorios.
Sixteen randomized controlled trials were included in the analysis.
Trece ensayos controlados aleatorios se incluyeron en el análisis.
Currently, four randomized controlled trials are ongoing.
Actualmente, cuatro ensayos controlados aleatorios están en curso.
Only seven studies were randomized controlled trials.
Solo siete estudios eran ensayos controlados aleatorios.
We included randomized controlled trials in any language.
Se incluyeron los ensayos controlados aleatorios en cualquier idioma.