In the era when there was no anesthesia, how did humans perform surgery? In the era when there was no anesthesia, how did humans perform surgery? In the era when there was no anesthesia, how did humans perform surgery? In the era when there was no anesthesia, how did humans perform surgery? In the era when there was no anesthesia, how did humans perform surgery? In the era when there was no anesthesia, how did humans perform surgery? In the era when there was no anesthesia, how did humans perform surgery? In the era when there was no anesthesia, how did humans perform surgery? In the era when there was no anesthesia, how did humans perform surgery? In the era when there was no anesthesia, how did humans perform surgery? In the era when there was no anesthesia, how did humans perform surgery? In the era when there was no anesthesia, how did humans perform surgery? In the era when there was no anesthesia, how did humans perform surgery? Source: Shenzhen Health Commission
