References
- Hasselbalch H., Jeppesen D. L., Engelmann M. D. M., Michaelsen K. F., Nielsen M. B. Decreased thymus size in formula-fed infants compared to breast-fed infants. Acta Paediatr 1996; 85: 1029
- Hasselbalch H., Jeppesen D. L., Ersbøll A. K., Engelmann M. D. M., Nielsen M. B. The size of thymus evaluated by sonography. A longitudinal study in infants during the first year of life. Acta Radiol 1997; 38: 222
- Hasselbalch H., Jeppesen D. L., Ersbøll A. K., Lisse I. M., Nielsen M. B. Sonographic measurements of the thymic size in healthy neonates. Relation to clinical variables. Acta Radiol 1997; 38: 95
- Hasselbalch H., Jeppesen D. L., Ersbøll A. K., Nielsen M. B. Thymus size in preterm infants evaluated by ultrasound. A preliminary report. Acta Radiol 1999; 40: 37
- Hasselbalch H., Nielsen M. B., Jeppesen D. L., Pedersen J. F., Karkov J. Sonographic measurements of the thymus in infants. Eur. Radiol 1996; 6: 700
- Kenward M. G. A method for comparing profiles of repeated measurements. Applied statistics, formal of the Royal Statistical Society, series C 1987; 36: 296
- Roitt I. Essential immunology, 8th edn. Blackwell Scientific Publications Ltd., London 1994
- The SAS Statistical Software. SAS/STAT user's guide, version 6, 4th edn. SAS Institute Inc., Cary, NCUSA 1989; vols. 1 and 2