المؤلفون: Peters, Sylvia AF, Grievink, Eefje H, van Bon, Wim HJ, van den Bercken, John HL, Schilder, AnneGM

المصدر: Developmental Medicine & Child Neurology ; volume 39, issue 1, page 31-39 ; ISSN 0012-1622 1469-8749

الاتاحة: http://dx.doi.org/10.1111/j.1469-8749.1997.tb08201.x
https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.1469-8749.1997.tb08201.x
https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.1469-8749.1997.tb08201.x