function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Alegro, Antun & Šegota, Vedran & Rimac, Anja & Kiebacher, Thomas', 1],
    ['Hugonnot, Vincent', 1],
    ['Lara, Francisco & San, Raúl D. & Román & León, Alicia', 1],
    ['Maier, Eva & Price, Michelle J.', 1],
    ['Osman, Imen Ben & Hugonnot, Vincent & Muller, Serge D.', 2],
    ['Plášek, Vítězslav & Sawicki, Jakub & Osorio, Felipe', 1],
    ['Thomas Kiebacher & Michael Lüth', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=8)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 7, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);