Osip Piatnitskywent to Canada following the Prague party conference, where he trained as a doctor, then he returned to Russia in 1913, taking a job as a doctor in the town of  Kirillovsky District in Vologda Oblast.
Osip Piatnitskywent to Canada following the Prague party conference, where he trained as a doctor, then he returned to Russia in 1913, taking a job as a doctor in the town of  Kirillovsky District in Vologda Oblast.