File Photo taken on June 29, 2017 shows Luis Navarro (R) who suffers from chronic diabetes sitting at the Institute of Angiology and Vascular Surgery in Havana, Cuba. Luis Navarro is a young Cuban who at 34 years of age already suffers from chronic diabetes for the past 23 years. Recently, several ulcers have appeared on his foot, putting it at risk of being amputated. However, this has not happened, thanks to a unique Cuban product Heberprot-P, a drug that has sparked acclaim for its effectiveness in controlling and healing diabetic foot ulcers. (Xinhua/Joaquin Hernandez)
