Johnson & Johnson said blood clots have been reported with all vaccines. Author of study they cited hits back

When news broke that Johnson & Johnson's Covid-19 vaccine might be linked to blood clots, the company responded by pointing a finger at Pfizer and Moderna's vaccines, issuing a media statement that said a study showed there were reports of blood clots with their vaccines as well.

source https://www.cnn.com/2021/04/19/health/johnson-vaccine-blood-clots-statement/index.html