{Reference Type}: Letter {Title}: Severe diarrhea by Cystoisospora belli in a well controlled HIV-infected patient. {Author}: Rial-Crestelo D;Otero B;PĂ©rez-Ayala A;Pinto A;Pulido F; {Journal}: AIDS {Volume}: 36 {Issue}: 3 {Year}: 03 2022 1 {Factor}: 4.632 {DOI}: 10.1097/QAD.0000000000003133