{{Cite journal| doi = 10.1530/EC-21-0363| issn = 2049-3614 (Print) 2049-3614 (Electronic) 2049-3614 (Linking)| volume = 10| issue = 10| pages = 1273–1282| last1 = Mueller| first1 = M.| last2 = Ebrahimi| first2 = F.| last3 = Christ| first3 = E.| last4 = Nebiker| first4 = C. A.| last5 = Schuetz| first5 = P.| last6 = Mueller| first6 = B.| last7 = Kutz| first7 = A.| title = Safety of parathyroidectomy in older vs. younger patients with primary hyperparathyroidism| journal = Endocr Connect| date = 2021-09-15| pmid = 34519277}}