1. Research Programme on Biomedical Informatics (GRIB), Department of Experimental and Health Sciences (DCEXS), Hospital del Mar Medical Research Institute (IMIM), Universitat Pompeu Fabra (UPF), Barcelona, Spain
2. Department of Biomedical Informatics, Harvard Medical School, Boston, MA, USA
3. Large-Scale Text Understanding Systems Lab, TALN Research Group, Department of Information and Communication Technologies (DTIC), Universitat Pompeu Fabra, Barcelona, Spain