function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Alvani, Somaye & Mahdikhani-Moghadam, Esmat & Rouhani, Hamid', 28],
    ['Azizi, Kourosh & Eskandari, Ali & Karegar, Akbar & Ghaderi, Reza', 3],
    ['Bohra, P. & Sanyal, A. K. & Hussain, A. & Mitra, B.', 3],
    ['Bohra, Padma', 6],
    ['Daramola, Fisayo Y. & Orisajo, Samuel B. & Malan, Antoinette P.', 2],
    ['Divsalar, Nafiseh & Shokoohi, Ebrahim & Marais, Mariette', 2],
    ['Gerber, K.', 2],
    ['Ghaderi, Reza & Karegar, Akbar & Miraeiz, Esmaeil', 2],
    ['Holovachov, Oleksandr', 8],
    ['Kashi, Leila & Karegar, Akbar', 3],
    ['Nguyen, Tien Huu & Bui, Quang Duc & Trinh, Phap Quang', 2],
    ['Shahina, F. & Nasira, K. & Firoza, K. & Erum, Y. I.', 6],
    ['Shokoohi, Ebrahim & Marais, Mariette & Fourie, Hendrika', 3],
    ['Von W. Schneider', 2],
    ['Zeng, Yongsan & Ye, Weimin & Tredway, Lane & Martin, Samuel', 5],
    ['Other (12)', 13]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=90)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 16, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);