الفترة:
Subjects: Children; Heart; Rheumatic heart diseases; Yemen; Diseases
Subjects: Mitral valve; Rheumatic heart diseases; Diseases; Heart; Surgery
Subjects: Heart; Rheumatic heart diseases
Subjects: Children; Iraq; Rheumatic heart diseases
Subjects: Asyut; Egypt; Mitral valve; Rheumatic heart diseases; Diseases
Subjects: Rheumatic heart diseases; Diseases; Heart