function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Almeida, Alexandre Oliveira De & Guerrazzi, Maria Cec Lia', 1],
    ['Bloch, Marcus Elieser & Schneider, J. G.', 1],
    ['Castro, Peter', 4],
    ['Coelho, Petrônio Alves & Almeida, Alexandre Oliveira De', 5],
    ['Edmonson, C. H.', 1],
    ['Fowler, Henry Weed', 1],
    ['González, José A.', 1],
    ['Lima, Daniel & Silva, Rafael Costa da & Aguilera, Orangel', 3],
    ['Mantelatto, Fernando L. & Tamburus, Ana Francisca', 1],
    ['Martin, Joel W. & Godwin, Scott & Moffitt, Robert', 5],
    ['Mendonça, Luana M. C. & Guimarães, Carmen R. P.', 1],
    ['Ossó, Àlex', 2],
    ['Serène, Raoul & Soh, C. L.', 1],
    ['Takeda, Masatsune', 1],
    ['Takeda, Masatsune & Tachikawa, Hiroyuki', 1],
    ['Other (1)', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=30)',
    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);