1. 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 2013 Articles Clinical epidemiologyEpidemiology--Statistical methodsCancer--EpidemiologyMedicine