function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Akyazi, Rana & Soysal, Mete & Altunç, Yunus Emre', 1],
    ['Arabuli, Tea & Matsuda, Tomoko & Negm, Mohamed W.', 3],
    ['Arabuli, Tea & Çobanoglu, Sultan & Auger, Philippe', 2],
    ['Chalil, Suada Poolayulla & Kunnathattil, Maneesha', 3],
    ['De Vis, R. M. J. & De Moraes, G. J.', 1],
    ['Demite, P. R. & Flechtmann, C. H. W. & Feres, R. J. F.', 1],
    ['Ma, Min & Li, Sheng-Cai & Fan, Qing-Hai', 2],
    ['Marić, Ivana & Marčić, Dejan & Petanović, Radmila', 1],
    ['Naves, Pedro & Nóbrega, Filomena & Auger, Philippe', 2],
    ['Zhovnerchuk, Olga & Auger, Philippe', 1],
    ['Zriki, G. & Shaabo, A. & Boubou, A.', 2]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=19)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 11, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);