A SENSITIVE, PRECISE, AND CONVENIENT METHOD FOR DETERMINATION OF 1,25-DIHYDROXYVITAMIN D IN HUMAN PLASMA.EISMAN JA; HAMSTRA AJ; KREAM BE et al.1976; ARCH. BIOCHEM. BIOPHYS.; U.S.A.; DA. 1976; VOL. 176; NO 1; PP. 235-243; BIBL. 30 REF.Article

RICKETS OF PREMATURITY: SUPRANORMAL LEVELS OF SERUM 1,25-DIHYDROXYVITAMIN DCHESNAY RW; HAMSTRA AJ; DE LUCA HF et al.1981; AM. J. DIS. CHILD. (1960); ISSN 0002-922X; USA; DA. 1981; VOL. 135; NO 1; PP. 34-37; BIBL. 25 REF.Article

ABSENCE OF SEASONAL FLUCTUATION IN SERUM CONCENTRATION OF 24,25(OH)₂-VITAMIN D IN CHILDHOODCHESNEY RW; HAMSTRA AJ; DE LUCA MF et al.1982; CALCIFIED TISSUE INTERNATIONAL; ISSN 0171-967X; DEU; DA. 1982; VOL. 34; NO 6; PP. 527-530; BIBL. 17 REF.Article

SERUM 1,25-DIHYDROXYVITAMIN D LEVELS IN NORMAL SUBJECTS AND IN PATIENTS WITH HEREDITARY RICKETS OR BONE DISEASESCRIVER CR; READE TM; DELUCA HF et al.1978; NEW ENGL. J. MED.; USA; DA. 1978; VOL. 299; NO 18; PP. 976-979; BIBL. 26 REF.Article

CIRCULATING VITAMIN D METABOLITE CONCENTRATIONS IN CHILDHOOD RENAL DISEASESCHESNEY RW; HAMSTRA AJ; MAZESS RB et al.1982; KIDNEY INT.; ISSN 0085-2538; USA; DA. 1982; VOL. 21; NO 1; PP. 65-69; ABS. FRE; BIBL. 29 REF.Article

SUPRANORMAL 25-HYDROXYVITAMIN D AND SUBNORMAL 1,25-DIHYDROXYVITAMIN D. THEIR ROLE IN X-LINKED HYPOPHOSPHATEMIC RICKETSCHESNEY RW; MAZESS RB; ROSE P et al.1980; AM. J. DIS. CHILD. (1960); ISSN 0002-922X; USA; DA. 1980; VOL. 134; NO 2; PP. 140-143; BIBL. 27 REF.Article

REDUCTION OF SERUM-1,25-DIHYDROXYVITAMIN-D₃ IN CHILDREN RECEIVING GLUCOCORTICOIDSCHESNEY RW; MAZESS RB; HAMSTRA AJ et al.1978; LANCET; GB; DA. 1978; NO 8100; PP. 1123-1125; BIBL. 32 REF.Article

SERUM 1,25-DIHYDROXYVITAMIN D LEVELS IN NORMAL CHILDREN AND IN VITAMIN D DISORDERSCHESNEY RW; ROSEN JF; HAMSTRA AJ et al.1980; AM. J. DIS. CHILD. (1960); ISSN 0002-922X; USA; DA. 1980; VOL. 134; NO 2; PP. 135-139; BIBL. 25 REF.Article

NORMAL INTRAUTERINE DEVELOPMENT OF THE FETUS OF A WOMAN RECEIVING EXTRAORDINARILY HIGH DOSES OF 1,25-DIHYDROXYVITAMIN D₃MARX SJ; SWART EG; HAMSTRA AJ et al.1980; J. CLIN. ENDOCRINOL. METAB.; ISSN 0021-972X; USA; DA. 1980; VOL. 51; NO 5; PP. 1138-1142; BIBL. 26 REF.Article

VITAMIN D METABOLITE LEVELS IN ONCOGENIC OSTEOMALACIASWEET RA; MALES JL; HAMSTRA AJ et al.1980; ANN. INTERN. MED.; ISSN 0003-4819; USA; DA. 1980; VOL. 93; NO 2; PP. 279-280; BIBL. 8 REF.Article

DETERMINATION OF VITAMIN D AND ITS METABOLITES IN PLASMA FROM NORMAL AND ANEPHRIC MANSHEPARD RM; HORST RL; HAMSTRA AJ et al.1979; BIOCHEM. J.; GBR; DA. 1979; VOL. 182; NO 1; PP. 55-69; BIBL. 37 REF.Article

SYNTHESIS OF 25-HYDROXY (26,27-³H) VITAMIN D₃ WITH HIGH SPECIFIC ACTIVITYNAPOLI JL; FIVIZZANI AM; HAMSTRA AJ et al.1979; ANAL. BIOCHEM.; USA; DA. 1979; VOL. 96; NO 2; PP. 481-488; BIBL. 18 REF.Article

A BIOASSAY CAPABLE OF MEASURING 1 PICOGRAM OF 1,25-DIHYDROXYVITAMIN D₃.STERN PH; HAMSTRA AJ; DELUCA HF et al.1978; J. CLIN. ENDOCRINOL. METABOL.; USA; DA. 1978; VOL. 46; NO 6; PP. 891-896; BIBL. 30 REF.Article

ELEVATED SERUM 1,25-DIHYDROXYVITAMIN D CONCENTRATIONS IN THE HYPERCALCEMIA OF SARCOIDOSIS: CORRECTION BY GLUCOCORTICOID THERAPYCHESNEY RW; HAMSTRA AJ; DELUCA HF et al.1981; J. PEDIATR.; ISSN 0022-3476; USA; DA. 1981; VOL. 98; NO 6; PP. 919-922; BIBL. 16 REF.Article

A FAMILIAL SYNDROME OF DECREASE IN SENSITIVITY TO 1,25-DIHYDROXYVITAMIN DMARX SJ; SPIEGEL AM; BROWN EM et al.1978; J. CLIN. ENDOCRINOL. METABOL.; USA; DA. 1978; VOL. 47; NO 6; PP. 1303-1310; BIBL. 34 REF.Article

ABSENCE OF SEASONAL VARIATION IN SERUM CONCENTRATIONS OF 1,25-DIHYDROXYVITAMIN D DESPITE A RISE IN 25-HYDROXYVITAMIN D IN SUMMERCHESNEY RW; ROSEN JF; HAMSTRA AJ et al.1981; J. CLIN. ENDOCRINOL. METAB.; ISSN 0021-972X; USA; DA. 1981; VOL. 53; NO 2; PP. 139-142; BIBL. 26 REF.Article

VITAMIN-S-DEPENDENT RICKETS TYPE II. RESISTANCE OF TARGET ORGANS TO 1,25-DIHYDROXYVITAMIN D.BROOKS MH; BELL NH; LOVE L et al.1978; NEW ENGL. J. MED.; U.S.A.; DA. 1978; VOL. 298; NO 18; PP. 996-999; BIBL. 23 REF.Article