title: The second specialty of general physicians.
mesh_terms: D000328:Adult; D000367:Age Factors; D005194:Family Practice / Q000639:trends*; D005260:Female; D006801:Humans; D008297:Male; D008511:Medicine / Q000639:trends; D008875:Middle Aged; D012017:Referral and Consultation; D012737:Sex Factors; D013038:Specialization / Q000639:trends*; D006113:United Kingdom