IFNγR1 deficiency presenting with visceral leishmaniasis and Mycobacterium Avium infections mimicking HLH. Issue 1 (30th August 2021) - Khalid, Muhammad Bilal; Lemos, Sónia Gaspar; Myint‐Hpu, Katherine; Draper, Debbie; Stoddard, Jennifer; Niemela, Julie E.; Rosenzweig, Sergio D.; Pittaluga, Stefania; Delmonte, Ottavia M.; Notarangelo, Luigi D.