Lauenborg, B
Litvinov, I V
Zhou, Y
Willerslev-Olsen, A
Bonefeld, C M
Nastasi, C
Fredholm, S
Lindahl, L M
Sasseville, D
Geisler, C
Wasik, M M
Krejsgaard, T
Gjerdrum, L M R
Iversen, L
Odum, N
Woetmann, A
Article History
First Online: 21 July 2017
Competing interests
: The authors declare no conflict of interest.