Complex sentence: While working at the Cross Cancer Institute in Edmonton, Alberta he developed a program for actuarial analysis of cancer survival with Dr. Adalei Starreveld and co-wrote with Don Chapman a text on radiation physics, chemistry and biology in mammalian cells.
Split into simpler sentences: While working at the Cross Cancer Institute in Edmonton, Alberta he developed and wrote an actuarial analysis of cancer survival with Dr. Adalei Starreveld. Gillespie is the co-author of a text on radiation physics, chemistry and biology in mammalian cells.