function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Blasco-Aróstegui, Javier & Prendini, Lorenzo', 1],
    ['Fet, Victor & Graham, Matthew R. & Webber, Michael M.', 3],
    ['Fet, Victor & Soleglad, Michael E. & Parmakelis, Aristeidis', 3],
    ['Kovařík, František & Audy, Marek & Sarbu, Serban M.', 2],
    ['Kovařík, František & Fet, Victor & Soleglad, Michael E.', 1],
    ['Kovařík, František & Lowe, Graeme & Byronová, Markéta', 2],
    ['Kovařík, František & Šťáhlavský, František', 6],
    ['Teruel, Rolando & Fet, Victor & de Armas, Luis F.', 3],
    ['Tropea, G. & Fet, V. & Parmakelis, A. & Stathi, I.', 4],
    ['Tropea, Gioele', 8],
    ['Tropea, Gioele & Fet, Victor', 3],
    ['Tropea, Gioele & Fet, Victor & Parmakelis, Aristeidis', 8],
    ['Tropea, Gioele & Parmakelis, Aristeidis', 5],
    ['Tropea, Gioele & Yağmur, Ersen Aydın', 6],
    ['Yağmur, Ersen Aydın', 4],
    ['Other (12)', 12]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=71)',
    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);