While pistols are sold in a wide range of calibers, those chambered for 9mm ammunition have emerged as a clear favorite among American gun owners. Pistols chambered for 9mm ammunition are the best ...

Dr Michael Kaplan, Department of Neonatology, Shaare Zedek Medical Centre, Box 3235, Jerusalem 91031, Israel.Email: kaplan{at}cc.huji.ac.il AIM To determine whether vitamin K1, which is routinely ...