Aria Nikjooy, from Manchester, wrote two books as a final gift for his son Eliyas
The paediatrician died on February 8 after being diagnosed with a brain tumour
He got headaches and was diagnosed with grade 4 cerebellar medulloblastom
He wrote Eddie and the Magic Healing Stone to explain his illness to his son, 3
His wife Naomi, 33, said a second book is coming out soon as a surprise for Eliyas