function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Armitage, Brian J. & Ríos González, Tomás A.', 5],
    ['Billingham, Zacariah D. & Theischinger, Gunther', 10],
    ['Billingham, Zacariah D. & Theischinger, Günther', 1],
    ['D, Zacariah & Theischinger, Günther', 2],
    ['Driauach, Ouafaa & Belqat, Boutaina', 3],
    ['Ivkovic, Marija & Doric, Valentina & Baranov, Viktor', 2],
    ['Kolcsar, Levente-Peter & Oosterbroek, Pjotr', 24],
    ['Kolcsar, Levente-Peter & Toeroek, Edina & Keresztes, Lujza', 20],
    ['Kolcsar, Levente-Peter & d\'Oliveira, Micha Camiel', 9],
    ['Obona, Jozef & Stary, Jaroslav & Manko, Peter & Hrivniak, Ľubos', 6],
    ['Ribeiro, Guilherme C. & Santos, Daubian', 10],
    ['Ribeiro, Guilherme Cunha & Lamas, Carlos José Einicker', 8],
    ['Stary, Jaroslav & Obona, Jozef', 2],
    ['Starý, Jaroslav', 19],
    ['Ÿ, Jaroslav Star & Oosterbroek, Pjotr', 5],
    ['Other (4)', 4]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=130)',
    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);