Ann: IDX: Replacement Bidder's Statement, page-63

Take over activity heats up, more to come

"In the healthcare sector, Sirtex Medical (ASX: SRX) recently agreed to a $1.6 billion takeover offer from US-based Varian Medical Systems, after receiving several takeover offers in late 2017.
Sirtex chief executive Andrew McLean said Varian's all-cash takeover offer of $28 for each Sirtex share was the highest bid. Some fund managers don't rule out another bid for Sirtex before the Varian deal is finalised in May.
Also in the healthcare space, European private equity firm Permira may be making a bid for Integral Diagnostics, according to media reports. Integral Diagnostics' (ASX: IDX) board this month recommended shareholders reject a cash-and-scrip takeover bid from competitor Capitol Health (ASX: CAJ), saying it undervalued the company.
Permira also recently took over Australian radiology company I-MED Radiology Network (I-MED), the largest provider of diagnostic imaging services in Australia, with more than 200 clinics and 4 million patient procedures every year. The value of that deal wasn't disclosed. And reflecting just how cashed up it is, Permira was reportedly an under bidder to Varian for Sirtex."

This is the second reference I have seen to Permira. Not point getting involved in a bidding war with these guys, AH would do well to drop the takeover asap and not waste any more money.