In three experimental groups, a collagen sponge was placed on each side, overlaying the decorticated transverse processes.
在三个实验组，胶原海绵放在每一面上，并上覆脱皮横突。
Methods: 200 healthy babies of full term natural delivery were divided into two groups, experimental group and control group, according to the time of delivery, 100 babies each troup.
方法：将自然分娩的足月正常新生儿200例，按出生顺序分为实验组和对照组，每组100例。
Methods 42 elderly patients with intertrochanteric fractures were randomly divided into the experimental and the control groups, 21 cases in each group.
方法将42例老年股骨粗隆间骨折患者随机分为实验组和对照组，各21例。
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