Media type: E-Article Title: Plasma ?-endorphin levels and natural killer cells in two cases of congenital indifference to pain Contributor: Bernardini, Renato; Tin�, Alessandra; Mauceri, Gaetano; Mazzarino, Maria Clorinda; Malaponte, Grazia; Nicosia, Ausilia; Parano, Enrico; Fiumara, Agata imprint: Springer Science and Business Media LLC, 1992 Published in: Child's Nervous System Language: English DOI: 10.1007/bf00298446 ISSN: 0256-7040; 1433-0350 Keywords: Neurology (clinical) ; General Medicine ; Pediatrics, Perinatology and Child Health Origination: Footnote: