The HUMTICK study: protocol for a prospective cohort study on post-treatment Lyme disease syndrome and the disease and cost burden of Lyme borreliosis in Belgium., Geebelen, Laurence, Lernout Tinne, Kabamba-Mukadi Benoît, Saegeman Veroniek, Sprong Hein, Van Gucht Steven, Beutels Philippe, Speybroeck Niko, and Tersago Katrien , Arch Public Health, 2017, Volume 75, p.42, (2017)