المؤلفون: Sporik, R., Squillace, S. P, Ingram, J. M., Rakes, G., Honsinger, R. W, Platts-Mills, T. A E

المصدر: Thorax ; volume 54, issue 8, page 675-680 ; ISSN 0040-6376

الاتاحة: http://dx.doi.org/10.1136/thx.54.8.675
https://syndication.highwire.org/content/doi/10.1136/thx.54.8.675