Authors: Nielsen, NM Hedegaard, K Aaby, P

Citation: Nm. Nielsen et al., Intensity of exposure and severity of whooping cough, J INFECTION, 43(3), 2001, pp. 177-181

Authors: Nielsen, NM Aaby, P Wohlfahrt, J Pedersen, JB Melbye, M Molbak, K

Citation: Nm. Nielsen et al., Intensive exposure as a risk factor for severe polio: A study of multiple family cases, SC J IN DIS, 33(4), 2001, pp. 301-305

Authors: Nielsen, NM Wohlfahrt, J Rasmussen, S Molbak, K Askgaard, DS Aaby, P

Citation: Nm. Nielsen et al., Multiple sclerosis and poliomyelitis - A Danish historical cohort study, ACT NEUR SC, 101(6), 2000, pp. 384-387