Nyboe Andersen Nynne, Pasternak Björn, Andersson Mikael, Nielsen Nete Munk, Jess Tine
Department of Epidemiology Research, Statens Serum Institut, 2300 Copenhagen S, Denmark.
JAMA Intern Med. 2015 Dec;175(12):1990-2. doi: 10.1001/jamainternmed.2015.5396.