If J&J Coronavirus Vaccine Shots Are Halted Because of Blood Clots, Why Not Moderna and Pfizer-BioNTech Also? https://stuartbramhall.wordpress.com/2021/04/18/if-jj-coronavirus-vaccine-shots-are-halted-because-of-blood-clots-why-not-moderna-and-pfizer-biontech-also/