function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Akrami, Mohammad Ali', 1],
    ['Bayartogtokh, Badamdorj & Bae, Yang-Seop', 3],
    ['Bayartogtokh, Badamdorj & Shimano, Satoshi', 1],
    ['Ermilov, Sergey G. & Corpuz-Raros, Leonila', 1],
    ['Ermilov, Sergey G. & Klimov, Pavel B.', 3],
    ['Ermilov, Sergey G. & Starý, Josef', 1],
    ['HuK, Ya & ZhengK, Qian-Fen & YangK, Mao-Fa', 2],
    ['Murvanidze, Maka & Mumladze, Levan', 1],
    ['Nakamura, K. & Nakamura, Y. - N. & Fujikawa, T.', 1],
    ['Norton, Roy A. & Ermilov, Sergey G.', 1],
    ['Oliveira, Anibal R. & Argolo, Poliane S. & De, Gilberto J.', 2],
    ['Revelo-Tobar, Harol', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=18)',
    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);