Some methodological problems in studying consultations in general practice.
D000328:Adult; D000367:Age Factors; D000368:Aged; D005194:Family Practice; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D010817:Physician-Patient Relations; D012017:Referral and Consultation; D012107:Research Design; D006113:United Kingdom