The idea that assessment is intrinsic to effective instruction is traced from early experiments in the individualization of learning through the work of Benjamin Bloom to reviews of the impact of feedback on learners in classrooms.
Incidental hypervascular lesions are also very common findings in liver imaging. It is important to differentiate between 'touch' and 'don't touch' lesions. Benign 'don't touch' hypervascular tumors include hemangioma, FNH and small adenomas.
Infantile hypercalcaemia is a contiguous gene deletion syndrome caused by hemizygous deletion of 1.5 to 1.8 Mb on chromosome 7q11.23. The affected area of chromosome is known as the Williams-Beuren syndrome critical region (WBSCR) and encompasses the elastin gene (ELN).