General practitioner research. The significance of symptoms.
D000293:Adolescent; D000328:Adult; D002648:Child; D002675:Child, Preschool; D003933:Diagnosis; D003937:Diagnosis, Differential; D005194:Family Practice; D005260:Female; D005831:Genital Diseases, Female / Q000175:diagnosis; D006801:Humans; D008297:Male; D008875:Middle Aged; D011469:Prostatic Diseases / Q000175:diagnosis; D012141:Respiratory Tract Infections / Q000175:diagnosis