Complex sentence: In 1999 Gonzalez published an article describing prolonged life in a small group of patients with pancreatic cancer in the peer-reviewed journal "Nutrition and Cancer"; subsequently others concluded that the longer survival time reported by Gonzalez was due to selection bias and other confounds.
Split into simpler sentences: In 1999 Gonzalez published an article describing prolonged life in a small group of patients with pancreatic cancer in the peer-reviewed journal "Nutrition and Cancer". Subsequently others concluded that the longer survival time reported by Gonzalez was due to selection bias and other confounds.