function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Diffenthal, Mark & Horton, Tammy', 2],
    ['Lowry, J. K. & Kilgallen, N. M.', 14],
    ['Lowry, James K. & Stoddart, Helen E.', 1],
    ['Narahara, Yukiko & Tomikawa, Ko & Torigoe, Kenji', 5],
    ['Sorrentino, Rayane & Souza-Filho, Jesser F. & Senna, André R.', 2],
    ['Winfield, Ignacio & Hendrickx, Michel E. & Ortiz, Manuel', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=25)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 6, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);