"0001-01-01T00:00:00"^^ . . "disease affecting a small patient population (less than 1 in 2,000 citizens) for which it is not commercially viable to develop treatments"@en . . . "orphan disease"@en . "0001-01-01T00:00:00"^^ . . . "http://www.eurordis.org/en/content/what-orphan-drug"@en .