(a) judgment recovered against a tortfeasor liable in respect of that damage is not a bar to an action against any other person who would, if sued, have been liable as a joint tortfeasor in respect of the same damage,

(b) if more than one action is brought in respect of that damage by or on behalf of the person by whom it was suffered, or for the benefit of the estate or of the spouse, parent or child of that person, against tortfeasors liable in respect of the damage, whether as joint tortfeasors or otherwise, the sums recoverable under the judgments given in those actions by way of damages shall not in the aggregate exceed the amount of the damages awarded by the judgment first given; and in any of the actions, other than that in which judgment is first given, the plaintiff is not entitled to costs unless the court is of opinion that there was reasonable ground for bringing the action,

(c) a tortfeasor liable in respect of that damage may recover contribution from any other tortfeasor who is, or if sued, would have been, liable in respect of the same damage, whether as a joint tortfeasor or otherwise, but no person is entitled to recover contribution under this section from any person entitled to be indemnified by the person first mentioned in respect of the liability in respect of which the contribution is sought.