Trends in Citations to Books on Epidemiological and Statistical Methods in the Biomedical Literature Porta, Miquel ; Vandenbroucke, Jan P. ; Ioannidis, John P. A. ; Sanz, Sergio ; Fernandez, Esteve ; Bhopal, Raj ; Morabia, Alfredo ; Victora, Cesar ; Lopez, Tomàs Abstract Publication: PLoS ONE Pub Date: May 2013 DOI: 10.1371/journal.pone.0061837 Bibcode: 2013PLoSO...861837P