function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Bordera, Santiago & Palacio, Edgard', 6],
    ['Bordera, Santiago & Palacio, Edgard & Martínez, Juan José', 6],
    ['Broad, Gavin R.', 8],
    ['González-Moreno, Alejandra & Bordera, Santiago', 1],
    ['Kolarov, J.', 1],
    ['Kolarov, J. & Çalmasur, Ö.', 1],
    ['Palacio, Edgard & Bordera, Santiago & Díaz, Francisco', 6],
    ['Palacio, Edgard & Bordera, Santiago & Sääksjärvi, Ilari E.', 9],
    ['Riedel & Pénigot & Schwarz & Diller & Johansson & Japoshvili, G.', 2],
    ['Riedel, Matthias & Diller, Erich & Japoshvili, George', 1],
    ['Santiago Bordera & Ilari Eerikki Sääksjärvi & Carol Castillo', 15],
    ['Sääksjärvi, Ilari E. & Castillo, Carol & Bordera, Santiago', 1],
    ['Varga, O.', 6],
    ['Varga, Oleksandr', 4],
    ['Varga, Oleksandr & Reshchikov, Alexey', 3],
    ['Other (1)', 1]
  ]);
  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);