Clair Armstrong Callan

Recent publications · Crossref

5 total works indexed

1. AN EXAMINATION OF THE DEGTJAREFF METHOD FOR DETERMINING SOIL ORGANIC MATTER, AND A PROPOSED MODIFICATION OF THE CHROMIC ACID TITRATION METHOD

   · 1934 · cited 16,655x

2. Recommendations for Cardiac Chamber Quantification by Echocardiography in Adults: An Update from the American Society of Echocardiography and the European Association of Cardiovascular Imaging

   · 2015 · cited 11,562x

3. Estimating Nonresponse Bias in Mail Surveys

   · 1977 · cited 9,328x

4. Genome-wide association study of 14,000 cases of seven common diseases and 3,000 shared controls

   · 2007 · cited 7,906x

5. Recommendations for Cardiac Chamber Quantification by Echocardiography in Adults: An Update from the American Society of Echocardiography and the European Association of Cardiovascular Imaging

   · 2015 · cited 6,710x

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