Jonna Idh , Anna Westman , Daniel Elias , Feleke Moges , Assefa Getachew , Aschalew Gelaw , Tommy Sundqvist , Tony Forslund , Addis Alemu , Belete Ayele , Ermias Diro , Endalkachew Melese , Yared Wondmikun , Sven Britton , Olle Stendahl and Thomas Schön
BMC Infectious Diseases 2008, 8:146doi:10.1186/1471-2334-8-146