RT Journal Article SR Electronic T1 Vitamin D Analogs in Cancer Prevention and Therapy: An Ancient Friend Revisited JF Anticancer Research JO Anticancer Res FD International Institute of Anticancer Research SP 3469 OP 3470 VO 29 IS 9 A1 JÖRG REICHRATH A1 WOLFGANG TILGEN A1 KLAUS DIEDRICH A1 MICHAEL FRIEDRICH YR 2009 UL http://ar.iiarjournals.org/content/29/9/3469.abstract AB