function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Armitage, Brian J. & Ríos González, Tomás A.', 10],
    ['Kolcsar, Levente-Peter & Oosterbroek, Pjotr', 4],
    ['Obona, Jozef & Stary, Jaroslav & Manko, Peter & Hrivniak, Ľubos', 1],
    ['Podenas, Sigitas & Byun, Hye-Woo & Kim, Sam-Kyu', 8],
    ['Ribeiro, Guilherme C. & Santos, Daubian', 5],
    ['Ribeiro, Guilherme Cunha & Lamas, Carlos José Einicker', 1],
    ['Zhang, Xiao & Li, Yan & Yang, Ding', 22],
    ['Zhang, Xiao & Yang, Yan Li Ding', 5],
    ['Ÿ, Jaroslav Star & Oosterbroek, Pjotr', 2]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=58)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 9, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);