1. Urinary hydroxyproline: creatinine ratio of normal humans at various ages;Allison, D.J.; Walker, A.; Smith, Q.T.;Clin. chim. Acta,1966
2. Urinary total hydroxyproline as an index of connective tissue turnover in bone;Dull, T.A.; Causing, L.; Henneman, P.H.;J. clin. Invest,1962
3. Human milk studies. XIV. A critique of the determinations of nitrogenous constituents;Erickson, B.N.; Stone, N.; Macy, I.G.;J. Biol. Chem,1933
4. Value of hydroxyproline indices in malnutrition;Howells, G.R.; Wharton, B.A.; McCance, R.A.;Lancet,1967
5. Urinary hydroxyproline in hyperparathyroidism: a study of three cases with and without bone lesions;Klein, L.; Albertsen, K.; Curtiss, Jr, P.H.;Metabolism,1962