Rothstein Edward, Kohl Katrin S, Ball Leslie, Halperin Scott A, Halsey Neal, Hammer Sandra Jo, Heath Paul T, Hennig Renald, Kleppinger Cynthia, Labadie Jerry, Varricchio Frederick, Vermeer Patricia, Walop Wikke
Pennridge Pediatric Associates, Sellersville, PA, USA.
Vaccine. 2004 Jan 26;22(5-6):575-85. doi: 10.1016/j.vaccine.2003.09.005.