title: Systemic lupus erythematosus or mixed connective tissue disease? -- A case of 14 year old girl with viral myocarditis.
mesh_terms: D000293:Adolescent; D003384:Coxsackievirus Infections / Q000150:complications*; D003937:Diagnosis, Differential; D029822:Enterovirus B, Human; D005260:Female; D006801:Humans; D008180:Lupus Erythematosus, Systemic / Q000175:diagnosis*; D008947:Mixed Connective Tissue Disease / Q000150:complications / Q000175:diagnosis*; D009205:Myocarditis / Q000150:complications*