High-dose vitamin D supplementation to prevent prostate cancer progression in localised cases with low-to-intermediate risk of progression on active surveillance (ProsD): protocol... oleh Val Gebski, Henry Woo, Howard Gurney, Bruce K Armstrong, David P Smith, Visalini Nair-Shalliker, Manish I Patel, Mark Frydenberg, John W Yaxley, Robert Gardiner, David Espinoza, Michael G Kimlin, Michael Fenech, David Gillatt, Krishan Rasiah, Nader Awad, James Symons