function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Augé, Marc', 1],
    ['Bates, Michael F. & Lobon-Rovira, Javier & Stanley, Edward L.', 2],
    ['Ceríaco, L. M. P. & De Sá, S. & Bandeira, S. & Valério, H.', 1],
    ['Conradie, Werner & Bittencourt-Silva, Gabriela B.', 1],
    ['Conradie, Werner & Branch, William R. & Watson, Gillian', 5],
    ['Krysko, Kenneth L. & Burgess, Joseph P. & Rochford, Michael R.', 1],
    ['Laurenti, Joseph Nicolas', 1],
    ['Marques, Mariana P. & Ceríaco, Luis M. P. & Stanley, Edward L.', 1],
    ['Marques, Mariana P. & Parrinha, Diogo & Lopes-Lima, Manuel', 1],
    ['Stanley, Edward L. & Ceríaco, Luis M. P. & Bandeira, Suzana', 1],
    ['Whiting, Martin J. & Branch, William R. & Pepper, Mitzy', 2],
    ['Čerňanský, Andrej', 2]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=19)',
    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);