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.
Dyfyniad Arddull ChicagoBrehm, John M., et al. Serum Vitamin D Levels and Markers of Severity of Childhood Asthma in Costa Rica. American Thoracic Society, 2009.
Dyfyniad MLABrehm, John M., et al. Serum Vitamin D Levels and Markers of Severity of Childhood Asthma in Costa Rica. American Thoracic Society, 2009.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.