function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Besteiro, Celia & Ayora, Mario', 1],
    ['Brzeski, M.', 1],
    ['Gagarin, Vladimir G. & Gusakov, Vladimir A.', 1],
    ['Gagarin, Vladimir G. & Naumova, Tatyana V.', 2],
    ['Gerber, K.', 1],
    ['Girgan, Chantelle & Marais, Mariette & Fourie, Hendrika', 2],
    ['Holovachov, Oleksandr', 92],
    ['Khudhir, Manda & Hodda, Mike & Nicholas, Evelyn', 5],
    ['Naumova, Tatyana V. & Gagarin, Vladimir G.', 4],
    ['Poiras, Larisa', 6],
    ['Shahina, F. & Nasira, K. & Firoza, K. & Erum, Y. I.', 4],
    ['Von W. Schneider', 2],
    ['Zeng, Yongsan & Ye, Weimin & Tredway, Lane & Martin, Samuel', 2],
    ['Zullini, A.', 3],
    ['Árpád, Soós', 11],
    ['Other (9)', 9]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=146)',
    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);