Witkowska HE؛ Lubin BH؛ Beuzard Y؛ Baruchel S؛ Esseltine DW؛ Vichinsky EP؛ Kleman KM؛ Bardakdjian-Michau J؛ Pinkoski L؛ Cahn S؛ وآخرون (17 أكتوبر 1991). "Sickle cell disease in a patient with sickle cell trait and compound heterozygosity for hemoglobin S and hemoglobin Quebec-Chori". New England Journal of Medicine. Massachusetts Medical Society. ج. 325 ع. 16: 1150–1154. DOI:10.1056/NEJM199110173251607. PMID:1891024.
Witkowska HE؛ Lubin BH؛ Beuzard Y؛ Baruchel S؛ Esseltine DW؛ Vichinsky EP؛ Kleman KM؛ Bardakdjian-Michau J؛ Pinkoski L؛ Cahn S؛ وآخرون (17 أكتوبر 1991). "Sickle cell disease in a patient with sickle cell trait and compound heterozygosity for hemoglobin S and hemoglobin Quebec-Chori". New England Journal of Medicine. Massachusetts Medical Society. ج. 325 ع. 16: 1150–1154. DOI:10.1056/NEJM199110173251607. PMID:1891024.