Extend db_refs documentation with UPPRO
Extend db_refs documentation with UPPRO

bgyori/indra,johnbachman/indra,johnbachman/belpy,sorgerlab/indra,bgyori/indra,johnbachman/indra,johnbachman/indra,johnbachman/belpy,sorgerlab/belpy,sorgerlab/indra,sorgerlab/indra,sorgerlab/belpy,bgyori/indra,sorgerlab/belpy,johnbachman/belpy