
Hypotonic-hyporesponsive episode (HHE) as an adverse event following immunization in early childhood: Case definition and guidelines for data collection, analysis, and presentation
Keywords: تعریف مورد; AEFI; adverse event following immunization; HHE; hypotonic-hyporesponsive episode; DTPw; diphtheria-tetanus-whole cell pertussis component vaccine; Hypotonic-hyporesponsive episode; Adverse event; Immunization; Guidelines; Case definition;