The primary chemotherapy principle was that one agent was used for those patients with low-risk factors and two or multiple-agents were used for those patients with high-risk factors.

初治化疗的原则为低危患者以单药化疗为主，高危患者采用多药联合化疗。

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Pediatric patients with low-risk Hodgkin's disease can be cured with therapy without an alkylating agent, bleomycin, etoposide, or high-dose, extended-field radiotherapy.

儿童低危型霍奇金氏病不必使用烷化剂、博莱霉素、鬼臼乙叉甙或大剂量扩野放疗等也可治愈。

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While it is impossible to predict a terrorist attack, taking some precautions and preparing oneself should be a priority for all travelers, says Christopher Falkenberg, a former Secret Service agent who now runs Insite Security, a risk management and security consulting firm that services corporations and high-net worth families.

FORBES: 10 Secret Service Survival Tips for Travelers