Despite Biden administration efforts, children’s hospitals across the country report some chemotherapy drugs commonly used for leukemia and lymphoma are hard to find. Pediatric cancer doctors are sounding the alarm about a growing shortage of chemotherapy drugs for children. The dwindling supplies add another layer to the ongoing cancer drug shortage crisis that’s left doctors scrambling and forced patients to make difficult choices about treatments since early February. The Biden administration has taken steps to address the crisis, in some cases successfully: Doctors say that shortages of two cancer drugs, carboplatin and cisplatin, have eased significantly in recent weeks. However,...