Karger Publishers have introduced an open access option, known as "Author's Choice".
In return for a fee of CHF 3,000, Karger will make an article freely available (at the time of publication) through http://www.karger.com/ , as well as depositing the final version directly into PubMed Central.
Articles routed through this mechanism are licenced under the Creative Commons, Attribution, Non-commercial licence. For further details see: http://content.karger.com/services/choice.asp
This Author Choice option meets the requirements of the Wellcome Trust and the other funders in the UKPMC Funders' Group.