A common problem in infants: vitamin B deficiency.

Background: Nutritional vitamin B12 (VB < sub > 12 < /sub > ) deficiency is characterized by anemia, the inability to gain weight, delay or decline in development. Children of mothers with VB < sub > 12 < /sub > deficiency have a risk of nutritional VB < sub > 12 < /sub > deficiency. Prevention and early treatment are necessary to prevent irreversible neurological damage.

Evaluation of the Attitude of Parents in Pediatric Oncology Towards COVID-19 Vaccine.

Severe acute respiratory syndrome, coronavirus (SARS, COVID-19) has been declared a pandemic by the World Health Organization since March 2020. Patients with active cancer should be considered especially for priority access to the COVID-19 vaccine. Therefore, our study aimed to learn parents' opinions of cancer-diagnosed patients about the COVID-19 vaccine.