He would practice pediatrics for 35 years before retiring in 1987 to lecture , to write , and to continue to help make `` megavitamin '' a household word and promote megavitamin therapy , in which he advocated the uses of Vitamin A and Vitamin C in massive amounts .
PRON AUX VERB NOUN ADP NUM NOUN ADP VERB ADP NUM PART VERB , PART VERB , CCONJ PART VERB PART VERB VERB `` NOUN '' DET NOUN NOUN CCONJ VERB NOUN NOUN , ADP DET PRON VERB DET NOUN ADP PROPN PROPN CCONJ PROPN PROPN ADP ADJ NOUN .