I. Herrera

A prospective safety study of allergen immunotherapy in daily clinical practice.

M. Reaño, L. Sánchez-Morillas, A. Iglesias-Cadarso, 2004, Allergologia et immunopathologia.

Long-term safety, tolerability, and consistency of effect of fentanyl pectin nasal spray for breakthrough cancer pain in opioid-tolerant patients.

R. Portenoy, M. Wallace, W. Raffaeli, 2010, Journal of opioid management.