Occipital Headache as Initial Manifestation of a Pancreatic Neuroendocrine Tumor.
Nikolaos TsoukalasAgathangelos TriantafyllidisMaria ToliaMichalis GalanopoulosIoannis D KostakisStamatina DemiriChristos ToumpanakisGeorgios KoumakisPublished in: Journal of gastrointestinal cancer (2019)
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