Cita APA

Brehm, J. M., Celedón, J. C., Soto-Quiros, M. E., Avila, L., Hunninghake, G. M., Forno, E., . . . Litonjua, A. A. (2009). Serum Vitamin D Levels and Markers of Severity of Childhood Asthma in Costa Rica. American Thoracic Society.

Chicago Style Citation

Brehm, John M., et al. Serum Vitamin D Levels and Markers of Severity of Childhood Asthma in Costa Rica. American Thoracic Society, 2009.

Cita MLA

Brehm, John M., et al. Serum Vitamin D Levels and Markers of Severity of Childhood Asthma in Costa Rica. American Thoracic Society, 2009.