title: Good clinical observation is essential before molecular studies.
mesh_terms: D000293:Adolescent; D000328:Adult; D002648:Child; D003937:Diagnosis, Differential; D005260:Female; D006801:Humans; D008297:Male; D008967:Molecular Biology; D009136:Muscular Dystrophies / Q000175:diagnosis / Q000235:genetics*; D010375:Pedigree