by Sackett, DC, Wiegert, EJ, Egan, JS, Nicholas, DC, Hlavsa, MC, Beach, MJ, Gilchrist, J
Published in JAMA : the journal of the American Medical Association (24.06.2009)

by Sackett, D C, Wiegert, E J, Egan, J S, Nicholas, D C, Hlavsa, M C, Beach, M J, Gilchrist, J
Published in MMWR. Morbidity and Mortality Weekly Report (15.05.2009)