title: The ecology of normal values in clinical chemistry.
mesh_terms: D000328:Adult; D000367:Age Factors; D000368:Aged; D000704:Analysis of Variance; D002624:Chemistry, Clinical; D002940:Circadian Rhythm; D019411:Clinical Laboratory Techniques; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D044469:Racial Groups; D012621:Seasons