Last year Dr. Kumar, head of the health ministry's Central TB Division, publicly criticized Hinduja Hospital and its researchers, saying their findings of "total drug resistance" published in a medical journal would hurt Indian tourism and should have been reported to him first.
Nevertheless, after some resistance, Mr Cameron has published a list of all big Conservative donors who have dined with him in Downing Street or Chequers, his official rural retreat.
In 2007, he and his colleagues published the DARE trial, which showed that resistance training plus aerobics was the most beneficial approach for people with diabetes.