Authors:Thomas P. Ahern, University of VermontAnne Broe, University of Southern DenmarkTimothy Lash, Emory UniversityDeirdre P. Cronin-Fenton, Aarhus University HospitalSinna Pilgaard Ulrichsen, Aarhus University HospitalPeer M. Christiansen, Aarhus University HospitalBernard F. Cole, University of VermontRulla M. Tamimi, Brigham & Womens HospitalHenrik Toft Sorensen, Aarhus University HospitalPer Damkier, University of Southern Denmark