Answers are grounded in this paper and cite their sources.
RESPONSE TO: Kumar R, Bhatia A. Common variable immunodeficiency in adults: current diagnostic protocol and laboratory measures. Expert Rev. Clin. Immunol. 10(2), 000-000 (2014).
No takes yet. Share an insight, caveat, or question.
Ameratunga et al. (2014) studied this question.
Synapse has enriched 10 related papers. Consider them for comparative context: