CALCA and neuroendocrine carcinoma: Machens Machens A A Haedecke Haedecke J J Holzhausen Holzhausen HJ HJ Differential diagnosis of calcitonin-secreting neuroendocrine carcinoma of the thyroid by pentagastrin stimulation Differential diagnosis of calcitonin-secreting neuroendocrine carcinoma of the thyroid by pentagastrin stimulation Langenbecks Arch Surg Langenbecks Arch Surg 2000 2000 385 385 398 398 401 401 10.1007/s004230000169 10.1007/s004230000169 supplied-pmid 11127524?