This paper presents, within a framework of the Solow model, evidence that there should be two different reasons for convergence. One is due to diminishing returns to capital and the other is due to technological diffusion. This paper shows that OECD and low income countries follow a pattern of conditional convergence but middle income countries do not. This seems to imply that technological dif...

The unequal distribution of neurosurgical resources and diseases in the world contributes to inequality. Eight in ten neurosurgical cases needing essential neurosurgical care are found in low- and middle-income countries (LMICs); however, LMICs lack the neurosurgical resources to address these needs. Besides, where neurosurgical care is available, it is not financially accessible to the majorit...