background: the current study was conducted to estimate the integrated mean of quality of life (qol) of the general population of different countries around the world and to compare them on the grounds of the human development index (hdi). methods: well-known international databases such as medline, scopus, science direct, google scholar & google, and domestic databases including sid, iranmedex...

spinal muscular atrophy (sma) is an autosomal recessive neuromuscular disorder caused by homozygous deletion of the survival motor neuron gene 1 (smn1) in more than 90% of patients. according to the age of onset and severity of the disease, sma is classified into three groups: type i (severe), type ii (intermediate) and type iii (mild). as reported, the smn2 gene, centromeric copy gene, showed ...