Rafiq, R., Aleva, F. E., Schrumpf, J. A., Heijdra, Y. F., Taube, C., Daniels, J. M., . . . de Jongh, R. T. (2015). Prevention of exacerbations in patients with COPD and vitamin D deficiency through vitamin D supplementation (PRECOVID): A study protocol. BMC Pulm Med.
Citação norma ChicagoRafiq, Rachida, et al. "Prevention of Exacerbations in Patients With COPD and Vitamin D Deficiency Through Vitamin D Supplementation (PRECOVID): A Study Protocol." BMC Pulm Med 2015.
MLA CitationRafiq, Rachida, et al. "Prevention of Exacerbations in Patients With COPD and Vitamin D Deficiency Through Vitamin D Supplementation (PRECOVID): A Study Protocol." BMC Pulm Med 2015.
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