Authors: L Ewing-Cobbs; L Kramer; M Prasad; D N Canales; P T Louis; J M Fletcher; H Vollero; S H Landry; K Cheung Journal: Pediatrics Date: 1998-08 Impact factor: 7.124
Authors: Jakob Matschke; Bernd Herrmann; Jan Sperhake; Friederike Körber; Thomas Bajanowski; Markus Glatzel Journal: Dtsch Arztebl Int Date: 2009-03-27 Impact factor: 5.594