Are doctors who recommend Covid vaccination to children upholding their Hippocratic Oath to do no harm?

‘This prospective cohort study enrolled students from two schools aged 13–18 years who received the second dose of the BNT162b2 mRNA COVID-19 vaccine.

Cardiovascular effects were found in 29.24% of patients, ranging from tachycardia, palpitation, and myopericarditis.’

https://www.preprints.org/manuscript/202208.0151/v1