function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Ascanius, P.', 1],
    ['Chaban, E. M. & Chernyshev, A. V.', 3],
    ['Cunha, Carlo M. & Salvador, Rodrigo B.', 3],
    ['Gutiérrez, Manuel Caballer & Ortea, Jesús & Rivero, Nelsy', 2],
    ['Mariottini, Paolo & Smriglio, Carlo & Oliverio, Marco', 1],
    ['Mehrotra, Rahul & A. Caballer Gutierrez, Manuel & M. Scott, Chad', 1],
    ['Negri, Mauro Pietro & Corselli, Cesare', 2],
    ['Rudman, William B.', 2],
    ['Salvador, Xavier & Fernández-Vilert, Robert & Moles, Juan', 1],
    ['Smith, E. A.', 1],
    ['Valdés, Ángel', 9],
    ['Valdés, Ángel & Cadien, Donald B. & Gosliner, Terrence M.', 16],
    ['Zvonareva, Sofya & Kantor, Yuri', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=43)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 13, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);