Castillo, P. R., Mera, R. M., Fredrickson, P. A., Zambrano, M., Del Brutto, V. J., & Del Brutto, O. H. (2014). Psychological distress in patients with restless legs syndrome (Willis-Ekbom disease): A population-based door-to-door survey in rural Ecuador. BMC Res Notes.

Castillo, Pablo R., Robertino M. Mera, Paul A. Fredrickson, Mauricio Zambrano, Victor J. Del Brutto, và Oscar H. Del Brutto. "Psychological Distress in Patients With Restless Legs Syndrome (Willis-Ekbom Disease): A Population-based Door-to-door Survey in Rural Ecuador." BMC Res Notes 2014.

Castillo, Pablo R., et al. "Psychological Distress in Patients With Restless Legs Syndrome (Willis-Ekbom Disease): A Population-based Door-to-door Survey in Rural Ecuador." BMC Res Notes 2014.