at age of 7 and 14 vs at ages of 7 and 14

Some examples from the web:

• 2.3. Entrepreneurship in secondary education (from the age of 14) 7
• An open label clinical study with a 3 month treatment period did not raise any safety concerns for anagrelide in 17 children/ adolescent patients with ET (age range 7-14 years) compared to 18 adult patients.
• Peak values occurred between 7 and 14 days after administration.
• I moved here at age of 16.
• Unaccompanied minor status applies to all children (generally between the ages of 5 and 14) travelling without adult supervision.
• These changes peak between 7 and 14 days after surgery.
• Amendment Nos 7 and 14 call for knowledge on production and control to be improved using the Geographical Information System.
• Key for me were Amendments 7 and 14 and paragraph 42.
• Articles 7 and 14 shall apply.
• XERISTAR 30 mg is available in packs of 7 and 28 capsules.
• Pack sizes of 7 and 28 tablets in blisters.
• Between the ages of 11 and 14, I was basically raised by my two half sisters.
• After an extensive search of his home, we found the remains of nine people mostly boys between the ages of 9 and 14.
• He also sustained repeated facial trauma between the ages of two and 14.
• Let us consider Amendments Nos 7 and 14 first.
• However, the same concern about consistency prevents us from accepting Amendments Nos 3, 7 and 14.
• Cmdr La Forge, overload indications on Argus generator 5, 7 and 14.
• We also have problems with Amendment Nos 6, 7 and 14.
• Article 14 shall apply from the date of application of Articles 7 and 14 of Regulation (EC) No 1224/2009.
• It can accept parts of Amendments Nos 7 and 14.

Some examples from the web:

• 2.3. Entrepreneurship in secondary education (from the age of 14) 7
• An open label clinical study with a 3 month treatment period did not raise any safety concerns for anagrelide in 17 children/ adolescent patients with ET (age range 7-14 years) compared to 18 adult patients.
• Peak values occurred between 7 and 14 days after administration.
• I moved here at age of 16.
• Unaccompanied minor status applies to all children (generally between the ages of 5 and 14) travelling without adult supervision.
• These changes peak between 7 and 14 days after surgery.
• Amendment Nos 7 and 14 call for knowledge on production and control to be improved using the Geographical Information System.
• Key for me were Amendments 7 and 14 and paragraph 42.
• Articles 7 and 14 shall apply.
• XERISTAR 30 mg is available in packs of 7 and 28 capsules.
• Pack sizes of 7 and 28 tablets in blisters.
• Between the ages of 11 and 14, I was basically raised by my two half sisters.
• After an extensive search of his home, we found the remains of nine people mostly boys between the ages of 9 and 14.
• He also sustained repeated facial trauma between the ages of two and 14.
• Let us consider Amendments Nos 7 and 14 first.
• However, the same concern about consistency prevents us from accepting Amendments Nos 3, 7 and 14.
• Cmdr La Forge, overload indications on Argus generator 5, 7 and 14.
• We also have problems with Amendment Nos 6, 7 and 14.
• Article 14 shall apply from the date of application of Articles 7 and 14 of Regulation (EC) No 1224/2009.
• It can accept parts of Amendments Nos 7 and 14.