Low free testosterone is associated with increased mortality in frail surgical patients oleh Fangyi Lin, BS, Gordon Hong, BS, Frances Kwon, MPH, Farha Pirani, BA, Salima Makhani, MD, Mark Henry, MD, Ian Cooke, MD, Reza Nabavizadeh, MD, Eric Midenberg, MD, Akanksha Mehta, MD, Chad Ritenour, MD, Viraj A. Master, MD, PhD, Kenneth Ogan, MD