Up to 250,000 appointments and operations are at risk in England's hospitals when junior doctors walk off the job for four days next week.
Ednews informs via News Sky that the strikes, which are part of a long-running pay dispute, begin at 6.59am on Tuesday and last until 6.59am on Saturday 15 April.
NHS national medical director Professor Sir Stephen Powis said: "This next round of strikes will see unparalleled levels of disruption, and we are very concerned about the potential severity of impact on patients and services across the country.
"This time the action immediately follows a four-day bank holiday weekend, which is already difficult as many staff are taking much-needed holiday, and it will be more extensive than ever before with hospitals facing nearly 100 hours without up to half of the NHS medical workforce."