Foxa1 and Foxa2 function both upstream of and cooperatively with Lmx1a and Lmx1b in a feedforward loop promoting mesodiencephalic dopaminergic neuron development - Wei Lin; Emmanouil Metzakopian; Yannis Emmanuel Mavromatakis; Nan Gao; Nikolaos Balaskas; Hiroshi Sasaki; James Briscoe; Jeffrey A. Whitsett; Martyn Goulding; Klaus H. Kaestner; S L Ang (2009)