function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Adams, Richard J. & Price, Roger D. & Clayton, Dale H.', 42],
    ['Bush, Sarah E.', 132],
    ['Gonza ́ Lez-Acun, Daniel A. & Palma, Ricardo L.', 164],
    ['Gustafsson, Daniel R. & Bush, Sarah E.', 62],
    ['Gustafsson, Daniel R. & Bush, Sarah E. & Palma, Ricardo L.', 48],
    ['Gustafsson, Daniel R. & Clayton, Dale H. & Bush, Sarah E.', 37],
    ['Gustafsson, Daniel R. & Najer, Tomas & Zou, Fasheng', 32],
    ['Gustafsson, Daniel R. & Olsson, Urban', 30],
    ['Ilieva, Mihaela', 205],
    ['Naz, Saima & Najer, Tomas & Gustafsson, Daniel R.', 145],
    ['Ošlejšková, Lucie & Krištofík, Ján & Trnka, Alfréd', 241],
    ['Palma, Ricardo L. & Peck, Stewart B.', 72],
    ['Sánchez-Montes, Sokani & Colunga-Salas, Pablo', 195],
    ['Valim, Michel P. & Palma, Ricardo L.', 30],
    ['Valim, Michel P. & Silveira, Luís F.', 24],
    ['Other (74)', 369]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=1828)',
    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);