A phase I trial of metformin in combination with vincristine, irinotecan, and temozolomide in children with relapsed or refractory solid and central nervous system tumors: A report... oleh Jonathan L. Metts, Matteo Trucco, Daniel A. Weiser, Patrick Thompson, Eric Sandler, Tiffany Smith, Jessica Crimella, Samer Sansil, Ram Thapa, Brooke L. Fridley, Nicholas Llosa, Thomas Badgett, Richard Gorlick, Damon Reed, Jonathan Gill