1. Vicente Gilsanz, Osman Ratib (2005) Hand bone age, Springer. Springer-Verlag Berlin Heidelberg New York, Germany
2. Greulich WW, Pyle SI (1959) Radiographic atlas of skeletal development of the hand and wrist, 2nd edition. Stanford University Press, Stanford, CA
3. Tanner J, Whitehouse R, Cameron N et al (1983) Assessment of Skeletal maturity and prediction of adult height, 2nd edn. Academic Press, London
4. Bull RK, Edwards PD, Kemp PM et al (1999) Bone age assessment: a large scale comparison of the Greulich and Pyle, and Tanner and Whitehouse (TW2) methods. Arch Dis Child 81:172–173
5. De Sanctis V, Soliman AT, Di Maio S et al (2014) Are the new automated methods for bone age estimation advantageous over the manual approaches? Pediatr Endocrinol Rev PER 12:200–205