Martinez de Haas, M G <br/><br/>
[Subnormal vitamin B6 levels in theophylline users].  [electronic resource] 

 -  Nederlands tijdschrift voor geneeskunde  Nov 1997 
 - 2176-9 p.  digital 
<br/><br/> Publication Type: English Abstract; Journal Article 
<br/><br/><label>ISSN: </label>0028-2162 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Aged<br/>Aged, 80 and over<br/>Drug Antagonism<br/>Humans<br/>Lung Diseases, Obstructive--drug therapy<br/>Middle Aged<br/>Pyridoxal Phosphate--blood<br/>Retrospective Studies<br/>Theophylline--adverse effects<br/>Vitamin B 6 Deficiency--blood