1. Information Science Department, BiTeM Group, HES-SO/HEG Genève, 17 Rue de la Tambourine, Carouge CH-1227, Switzerland
2. SIB Text Mining, Swiss Institute of Bioinformatics, 17 Rue de la Tambourine, Carouge CH-1227, Switzerland
3. CALIPHO Group, Swiss Institute of Bioinformatics, 1 Rue Michel-Servet, Geneva CH-1206, Switzerland
4. University of Geneva, Geneva