2020/12/16 01:22 Nutritionist Beatriz Millan, center right, of the Renal Dialysis Unit and her dialysis patients harvest lettuce and chard during an agro-therapy sessi. Nutritionist Beatriz Millan, center right, of the Renal Dialysis Unit and her dialysis patients harvest lettuce and chard during an agro-therapy session at El Tunal Hospital in Bogota, Colombia, Monday, Dec. 14, 2020. Doctors at El Tunal are hoping that gardening can have a positive effect on kidney patients, who must visit the hospital three or four times a week to have their blood cleansed by dialysis machines. (AP Photo/Fernando Vergara) Dialysis patients Luis Sanchez, 78, right, and Leonel Cifuentes, left, harvest lettuce and chard during an agro-therapy session at El Tunal hospital i.