Limitation: Methodological features and quality aried substantially and often were incompletely reported.
Limitation: Methodological features and quality aried substantially and often were incompletely reported.
局限性：试验方法的特点和质量本质上发生了变化并且经常不能被完全地报道出来。
Limitation: Methodological features and quality aried substantially and often were incompletely reported.
局限性：试验方法的特点和质量本质上发生了变化并且经常不能被完全地报道出来。