No difference between alfacalcidol and paricalcitol in the treatment of secondary hyperparathyroidism in hemodialysis patients: a randomized crossover trial

Ditte Hansen, Knud Rasmussen, Henning Danielsen, Helmut Meyer-Hofmann, Egidijus Bacevicius, Thomas G Lauridsen, Jens K Madsen, Birgitte G Tougaard, Peter Marckmann, Peter Thye-Roenn, Jørgen E Nielsen, Svend Kreiner, Lisbet Brandi