function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Aoki, Jun-Ichi', 1],
    ['Aoki, Jun-Ichi & Yamamoto, Yoshinori', 2],
    ['Balogh, J.', 1],
    ['Balogh, Péter', 2],
    ['Behan-Pelletier, Valerie M. & Lindo, Zoë', 1],
    ['Ermilov, Sergey G. & Alvarado-Rodriguez, Olman & Kontschan, Jeno', 2],
    ['Gomez-PamiesK, Diego Fernando & MartinezK, Pablo Antonio', 1],
    ['Norton, Roy A. & Ermilov, Sergey G.', 1],
    ['Oliveira, Anibal R. & Argolo, Poliane S. & De, Gilberto J.', 7],
    ['Perez-Gelabert, Daniel E.', 1],
    ['Revelo-Tobar, Harol', 5],
    ['Wallwork, John A.', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=25)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 12, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);