Query4All.com
Cppd.cc
Data generated from past analysis.
https://cppd.cc/
https://www.uptodate.com/contents/clinical-manifestations-and-diagnosis-of-calcium-pyrophosphate-crystal-deposition-cppd-disease
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5045115/
https://rheumatology.org/patients/calcium-pyrophosphate-deposition-cppd
https://my.clevelandclinic.org/health/diseases/4756-calcium-pyrophosphate-dihydrate-deposition-disease-cppd-or-pseudogout
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10040153/
https://bpac.org.nz/bpj/2013/october/cppd.aspx
https://www.explorationpub.com/Journals/emd/Article/100727
https://emedicine.medscape.com/article/330936-overview
https://www.clinexprheumatol.org/article.asp?a=10848