المؤلفون: O'Connor, NicholasE., Mulliken, JohnB., Banks-Schlegel, Susan, Kehinde, Olaniyi, Green, Howard

المصدر: The Lancet ; volume 317, issue 8211, page 75-78 ; ISSN 0140-6736

الاتاحة: http://dx.doi.org/10.1016/s0140-6736(81)90006-4
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