The paper in organized in four main sections vs The paper is organized in four main sections

Some examples from the web:

• The report is structured under four main sections.
• The assessment of past action and prospects falls into four main sections:
• The dialog is divided into four main sections:
• The underspending is mainly due to delays in four main projects.
• The effectiveness of Velcade has been studied in four main studies.
• The effectiveness of Tygacil has been studied in four main studies.
• Temodal capsules have been studied in four main studies.
• The effectiveness of Reyataz has been assessed in four main studies.
• Optruma has been studied in the treatment and in the prevention of osteoporosis in four main studies.
• Pelzont was studied in four main studies in patients with hypercholesterolaemia or mixed dyslipidaemia.
• OPATANOL has been studied in 688 patients in four main studies lasting between six and 14 weeks.
• MabCampath has been examined in four main studies involving a total of 446 patients with CLL.
• Evista has been studied in the treatment and the prevention of osteoporosis in four main studies.
• Bridion has been studied in four main studies in a total of 579 adults undergoing surgery using muscle relaxants.
• The effectiveness of NEVANAC has been studied in four main studies involving a total of 1,201 patients undergoing cataract surgery.
• Levitra has been studied in four main studies including 2,431 patients aged 20 to 83 years, where it was compared with placebo (a dummy treatment).
• Foscan has been studied in four main studies involving a total of 409 patients with head or neck cancer.
• The effectiveness of Arava in rheumatoid arthritis has been studied in four main studies involving over 2,000 patients.
• In the framework of this Strategy, measures are being implemented in four main areas: prevention, protection, pursuit and response.
• Following the conferral of management, monitoring missions were organized in four countries.

Some examples from the web:

• The report is structured under four main sections.
• The assessment of past action and prospects falls into four main sections:
• The dialog is divided into four main sections:
• The underspending is mainly due to delays in four main projects.
• The effectiveness of Velcade has been studied in four main studies.
• The effectiveness of Tygacil has been studied in four main studies.
• Temodal capsules have been studied in four main studies.
• The effectiveness of Reyataz has been assessed in four main studies.
• Optruma has been studied in the treatment and in the prevention of osteoporosis in four main studies.
• Pelzont was studied in four main studies in patients with hypercholesterolaemia or mixed dyslipidaemia.
• OPATANOL has been studied in 688 patients in four main studies lasting between six and 14 weeks.
• MabCampath has been examined in four main studies involving a total of 446 patients with CLL.
• Evista has been studied in the treatment and the prevention of osteoporosis in four main studies.
• Bridion has been studied in four main studies in a total of 579 adults undergoing surgery using muscle relaxants.
• The DNA is organized in words, call them: genes and chromosomes.
• The effectiveness of NEVANAC has been studied in four main studies involving a total of 1,201 patients undergoing cataract surgery.
• Levitra has been studied in four main studies including 2,431 patients aged 20 to 83 years, where it was compared with placebo (a dummy treatment).
• Foscan has been studied in four main studies involving a total of 409 patients with head or neck cancer.
• The effectiveness of Arava in rheumatoid arthritis has been studied in four main studies involving over 2,000 patients.
• In the framework of this Strategy, measures are being implemented in four main areas: prevention, protection, pursuit and response.