Sentence examples for several studies been from inspiring English sources

Severity of symptoms has in several studies been found to be a challenge for caregivers [ 26, 41, 52].

MRI has in several studies been shown to be highly predictive of patient outcome [17, 18, 19, 20].

Inhibition of mitochondrial aldehyde dehydrogenase (ALDH-2) has in several studies been shown to be involved in the development of tolerance to GTN [35 38] and GTN tolerance was described as a syndrome characterized by mitochondrial dysfunction [37].

Thus, hypoxic exposure has in several studies been shown to be detrimental for skeletal muscle mass.

Monocytes/macrophages and neutrophils have in several studies been demonstrated to have the capacity to stimulate tumor vascularization and growth [27], [28].

Prior hospital visits have in several studies been associated with risk of rehospitalisation.

Several studies are available from www.ifpri.org.org

Several studies are under way to look for other genes involved in chronic lung disease.

Several studies were published last year looking at monetary rewards and dopamine.

Several studies were flawed because participants discontinued treatment, the panel said.

Several studies are under way to study hormone doses and routes of administration -- patch versus pill -- in younger women.