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Are storks and New World vultures paraphyletic?
Helbig AJ, Seibold I. Helbig AJ, et al. Mol Phylogenet Evol. 1996 Oct;6(2):315-9. doi: 10.1006/mpev.1996.0080. Mol Phylogenet Evol. 1996. PMID: 8899732 No abstract available.