function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Dooley, John W. & Smith-Pardo, Allan', 1],
    ['Echeverría, María L. & Alonso, Sara I. & Comparatore, Viviana M.', 1],
    ['Heiden, Gustavo & Pirani, José Rubens', 24],
    ['Heiden, Gustavo & Ribas, Osmar Dos Santos', 1],
    ['Howell, Nathan & Krings, Alexander & Braham, Richard R', 2],
    ['Jarvis, Charlie', 3],
    ['Jeanmonod, Daniel & éd.', 1],
    ['Maia, Valéria Cid & Mascarenhas, Bernardo', 1],
    ['Percy, Diana M. & Rung, Alessandra & Hoddle, Mark S.', 1],
    ['Schneider, Angelo Alberto & Heiden, Gustavo & Boldrini, Ilsi Iob', 1],
    ['Thornhill, Robert & Krings, Alexander & Lindbo, David', 2],
    ['Valtierra, María Victoria & Heiden, Gustavo', 1],
    ['Valtierra, María Victoria & Marchesi, Eduardo & Heiden, Gustavo', 2]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=41)',
    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);